Pre-Algebra

posted by Anonymous

1. Given the function rule f(x) = x² – 3x + 2, what is the output of f(–2)?

2. Suppose you earn $12 each time you mow the lawn. Write the function describes the relationship between your total earnings E and the number of times you mow the lawn, m?

3. Mia charges $2.25 per hour when she babysits, plus $5.00 for transportation expenses. Write a function rule represents the amount y Mia charges to babysit for x hours?

4. The sale price of shrimp at a local grocery store is $1.15 for the first ounce and $0.95 for each additional ounce. Which function rule shows how the cost of shrimp, y, depends on the number of ounces, x?

1. 24
2. E=Mx
3. y=5+2.25x
4. y=x+.95

  1. Reiny

    1. how did you get 24 ?

    f(x) = x^2 - 3x + 2
    f(-2) = (-2)^2 - 3(-2) + 2
    = 4 + 6 + 2 = 12

    2. E = 12m

    3. correct

    4. y = 1.15 + .95(x-1)

  2. Anonyous

    Omg thank you so much!!

  3. Lil Helper

    There answers are for CCA 8th grade Unit 5 Lesson 13 math test.
    1.D
    2.A
    3.B
    4.B
    5.C
    6.D
    7.D
    8.B
    9.B
    10.A
    11.B
    12.D
    13.A
    14.A
    15.D
    16.D
    17.Open ended
    18.Open ended
    19.Open ended

  4. Anonymous

    Do you know the 7th grade test answers

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