Olga worked 37.5 hours last week and earned $12.50 an hour . if she gets a $2.50 per hour raise, how many hours will she have to work to make the same amount of money as she did last week?

She would have to work 31.25 hours

Step-by-step explanation:

To find the amount of hours, first determine how much she made last week. You can do that by multiplying the hours by the rate from the first week.

37.5 * $12.50 = $468.75

Now to find the number of hours, divide that amount by the new rate ($15.00)

$468.75/$15.00 = 31.25 hours

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.