Melody invested $7,500 into two accounts. one account paid 5% interest and the other paid 7.5% interest. she earned 6% interest on the total investment. how much money did she put in each account?

The amount put in the account that paid 5% was $4,500 and the amount put in the account that paid 7.5% was $3,000

Step-by-step explanation:

Let

x -----> the amount put in the account that paid 5%

$7,500-x -----> the amount put in the account that paid 7.5%

in this problem we have

so

therefore

The amount put in the account that paid 5% was $4,500 and the amount put in the account that paid 7.5% was $3,000

answer is x<

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: