Question

You are saving for a skateboard. Your aunt gives you $45 to start and you save $3 each week. The expression 45 + 3w gives the amount of money you save after w weeks. How much will you have saved after 4 weeks?(1 point) Responses $576 $576 $33 $33 $42 $42 $57

Answer 1

Rachel has been studying for her math test. In 15 minutes she finished 7 1/2 questions. How many questions does she answer in one minute? (1 point)

Answer 2

To find out how much you will have saved after 4 weeks, we need to plug in the value of w (=4) into the expression 45 + 3w.

45 + 3(4) = 45 + 12 = 57

Therefore, you will have saved $57 after 4 weeks.

Answer 3

To find out how many questions Rachel answers in one minute, we need to divide the number of questions she finished (7 1/2) by the time it took (15 minutes).

First, we need to convert the mixed number 7 1/2 into an improper fraction. To do that, we multiply the whole number by the denominator and add the numerator:

7 * 2 + 1 = 14 + 1 = 15

So, 7 1/2 is equivalent to the improper fraction 15/2.

Now, we can divide 15/2 by 15:
(15/2) ÷ 15 = (15/2) * (1/15) = (15 * 1) / (2 * 15) = 15/30

Simplifying 15/30, we get:

15 ÷ 15 = 1
30 ÷ 15 = 2

So, 15/30 simplifies to 1/2.

Therefore, Rachel answered 1/2 of a question in one minute.