1. Carlos is trying to read 12 pages of his book a night. The book has 156 pages. How many days, d, will it take him to finish the book? Choose the equation below that models this situation.
A. 12d = 156
B. 1560 = 12
C.
156
12
D.
12
=d
156

12d = 156

Step-by-step explanation:

Carlos is reading 12 pages / day

The total amount to read is 156

In order to find the days, you have to divide 156 by 12 or

Equation:

12d = 156; furthermore

d = 13 days, meaning it will take 13 days to read 156 pages.

A. 12d = 156

Step-by-step explanation:

The book has a total number of 156 pages. If he reads 12 pages per night, we need to multiple the total number of days by the amount he reads per night in order to get 156. Since we don't know how many days it will take, we will use d to represent the amount of days. So, the equation ends up looking like this:

12d = 156

d represents the amount of days it will take for Carlos to read the book.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10