Question

Sonia spends $48.65 at the bookstore. She buys a bookmark for $1.25 and z books that each cost $15.80.

Which equation can be used to determine z, the number of books Sonia buys?
A
48.65
2= 15.80 - 1.25
48.65
Z= 15.80 +1.25
c
Z=
48.65 - 1.25
15.80
48.65 + 1.25
ZE
15.80
0

Answer 1

15.8 + 1.25z = $48.65

she buys 3 books.

Explanation:

total will equal to: $48.65

buys a bookmark so, it is constant = 1.25

buys z books for 15.8, so: 15.8z

solve:

15.8z + 1.25 = 48.65

15.8z = 48.65 - 1.25

15.8z = 47.4

z = 3