Question

Salvador reads 20 books from the library each month for X months in a row. Write an expression to show how many books Salvador read in all. Then find the number of books Salvador read if he read for six months.

a) Total books = 20X; If X = 6, then books = 20*6 = 120.
b) Total books = 20 + X; If X = 6, then books = 20 + 6 = 26.
c) Total books = 20 - X; If X = 6, then books = 20 - 6 = 14.
d) Total books = X/20; If X = 6, then books = 6/20 = 0.3.

Answer 1

The correct expression for the total number of books Salvador read after X months is 20X. For six months, Salvador read a total of 120 books.

Step-by-step explanation:

To express how many books Salvador read after X months, we would use the expression 20 times X, where 20 represents the number of books Salvador reads each month and X represents the number of months. Therefore, the correct expression is 20X. If Salvador read books for six months, we would substitute X with 6 in the expression, resulting in 20*6, which equals 120 books.