Algebra help check answers?

[aescby]

Algebra Help Check answers please.?

1. [1.01]

Evaluate: -3 - (-6) (1 point)
-3
-18
-9
3

2. [1.02]

Evaluate: 3 • 42 (1 point)
144
48
24
36

3. [1.03]

Evaluate the following expression using the values given.
Find 4x - y - 2z if x = -2, y = 3, and z = -2. (1 point)
-15
15
-7
7

5. [1.06]

A cell phone plan offers a monthly rate of $25 for unlimited minutes plus $.05 per text message. Which algebraic expression below represents the total cost for this cell phone plan in terms of "x?" (1 point)
25.05x
25x + 0.05
25 + 0.05x
24.95x

6. [2.01]

2(x + y) = 2x + 2y is an example of which algebraic property? (1 point)
Distributive Property
Associative Property of Addition
Commutative Property of Addition
Symmetric Property

7. [2.02]

Solve: 3(4x - 3) = 51 (1 point)
5
4.5
3.5
3

9. [5.01]

Layla has allotted $76 for gifts while on vacation. She plans to buy a souvenir for her parents for $16 and spend the rest on 4 T-shirts for her friends. If x represents the price, in dollars, of a T-shirt, which inequality correctly represents the money Layla will spend on souvenirs? (1 point)
4x + 16 <= 76
16x + 4 <= 76
4x + 16 >= 76
16x + 4 >= 76

10. [2.06]

Solve:4/5 y + 2 =6 (1 point)
5
7
9
11

Based on the diagram, which of the following represents the number of children in the set
~Z ? (X ? Y)? (1 point)
{g, h, k}
{g, h, k, n}
{g, h, k, n, I, j}
{g, h, k, n, l, m, a, b}

14. [3.03]

Let A = {circle, square} and let B = {3, 4, 5}. Find A X B. (1 point)
{circle, square, 3, 4, 5}
{ }
{3, 4, 5}
{(circle, 3), (circle, 4), (circle, 5), (square, 3), (square, 4), (square, 5)}

15. [3.05]

The depth d(x), in feet, of a circular swimming pool at a point x feet from the edge is represented by the function below.



If the depth varies from 1 foot to 4 feet, which inequality describes the domain of the function? (1 point)

d(x) = 1 + x/8

0 ? x ? 8
0 ? x ? 24
0 ? x ? 40
1 ? x ? 8

16. [3.06]

If f(x) = x2 - 1, find f(3). (1 point)
5
2
8
-2

17. [4.01]

Which of the following is the slope between the two points (1, 5) and (6, 4)? (1 point)
1/5
-1/5
–5
-5

19. [4.03]

Identify the correct slope and y-intercept of the equation 5x - 3y = -6. (1 point)
slope = 5/3; y-intercept = (0, 2)
slope = -5; y-intercept = (0, -6)
slope = 3/5; y-intercept = (0, 2)
slope =5/3 ; y-intercept = (0, -6)

21. [4.06]

Write the equation of the line in slope-intercept form that passes through the points (-2, 6) and (-1, 4). (1 point)
y = -2x + 5
y = 2x - 3
y = 2x + 6
y = -2x + 2

23. [5.01]

Solve: 6x - 2 > 8x + 4 (1 point)
x > -3
x >= -3
x < -3
x <= -3

24. [5.02]

Choose the correct description of the graph of the compound inequality.

x - 2 > -3 and 3x <= 12 (1 point)
A number line with an open circle on -1, shading to the left, and a closed circle on 4, shading to the right.
A number line with an open circle on -1, a closed circle on 4, and shading in between.
A number line with a closed circle on -1, shading to the left, and an open circle on 4, shading to the right.
A number line with a closed circle on -1, an open circle on 4, and shading in between.


25. [5.05]


Alicia's doctor has put her on a diet of 600 calories per meal. This means she can consume no more than 600 calories at any meal. Her options in the cafeteria for lunch are as follows:

Yogurt that has 120 calories per serving
Mini Sandwiches that have 100 calories per serving
Which inequality below can be used to find the possible combinations of servings of yogurt (y) and mini sandwiches (s) she can eat and stay within her goal of no more than 600 calories? (1 point)
120y + 100s >= 600
120y - 100s >= 600
120y + 100s <= 600
120y - 100s <= 600

26. How do you feel about the Segment 1 Practice Test? If there are any topics you are unsure of, please list them here for your teacher to review. (1 point)
56 minutes ago


Additional Details

I have the answers i just need to check them I DONT HAVE A TEXTBOOK

[vohkinne]

1) 3
2) If the "•" means multiplication then none of the provided answers is correct. It's 126.
3) -7
5) If x denotes the number of monthly text messages, then 25 + 0.05x
6) Distributive Property
7) 5
9) 4x + 16 <= 76
10) Assuming this is (4/5)(y) + 2 =6, then y = 5
Can't do the set-intersection problem without seeing the diagram.
14) {(circle, 3), (circle, 4), (circle, 5), (square, 3), (square, 4), (square, 5)}
15) 0 ? x ? 24
16) Assuming this is f(x) = x² - 1, f(3) = 8
17) -1/5
19) slope = 3/5; y-intercept = (0, 2)
21) y = -2x + 2
23) x < -3
24) A number line with an open circle on -1, a closed circle on 4, and shading in between.
25) 120y + 100s <= 600