Janet has a jar of 54 coins consisting of dimes and quarters. if she has a total of $8.70, how many dimes does she have? 22 24 30 32

32

Step-by-step explanation:

Let x  be the number of dimes and y be the number of quarters Janet has.

We know that 1 dime = $0.1

1 quarter = $0.25

Given : Janet has a jar of 54 coins consisting of dimes and quarters.

i.e.

She has a total of $8.70.

i.e.

Multiply equation (2) by 10 we get

Eliminate equation (1) from (3), we get

Put value of y=22 in (1), we get

Hence, she has 32 dimes.

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.