Alex has 3 more quarters than dimes in his pocket, for a total of $5.25. Which equation could be used to determine the number of dimes, x, in his.
pocket? *

the equation used to determine the number of dimes in his pocket is an "algebraic equation" (3/4)x = 5.25

and the value of x = 7

Step-by-step explanation:

We are being told that:

Alex has 3 more quarters than dimes in his pocket, for a total of $5.25.

Let the value for the dimes in his pocket be x:

So he has 3 more quaters than x

We know that a quarter is 1/4

3 more quaters than x = (3/4) x

(3/4)x = 5.25

3x = 5.25 * 4

3x = 21

x = 21/3

x = 7

Thus, the equation used to determine the number of dimes in his pocket is an "algebraic equation" (3/4)x = 5.25

and the value of x = 7

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer