Harper goes to a store an buys an item that costs x dollars. She has a coupon for 30%
off, and then a 6% tax is added to the discounted price. Write an expression in terms
of x that represents the total amount that Harper paid at the register.

9

step-by-step explanation:

the answer would be c:   ax + b = ax + c

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870