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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?

Respuesta :

Jlsumerlin06

Answer:

do you still need help

Step-by-step explanation:

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  

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