Question

A store owner spends 7x + 13 dollars on two orders of boxes of light bulbs, including shipping.

Part A
If she spends 3x + 5 dollars on the first order of light bulbs, which of the following represents how much she spends on the second order?
A. 10x + 18
B. 4x + 8
C. 21x + 65
D. 10x + 8
Part B
If the store owner spent a total of $90 on both orders, how much does a box of light bulbs cost in dollars?

Answer 1

Answer: I belive that the answer to part A is 4x + 8.

7x - 3x = 4x. 13 - 5 = 8. Combine those and you get 4x + 8.

Part B is X= 11.

Step-by-step explanation: For Part B, the equation would be 7x + 13 = 90

- 13 - 13

7x = 77

__ __

7 7

x = 11

Answer 2

do you still need help

Explanation: