Last year, Chang opened an investment account with S8500. At the end of the year, the amount in the account had decreased by 6.8% How much is this decrease in dollars? How much money was in his account at the end of last year?

Decrease in amount:

Year-end amount:

Decrease in amount= $578

Year-end amount= $7,922

Step-by-step explanation:

0.068=x/8500

Isolate x to multiply 0.068 by 8500= 578 which is the decrease in dollars.

so, 8500-578= $7,922 is how much money was in his account at the end of last year.

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

correct answer:

b.(19,-2)