Joel bought 8 books. Some books cost $13 each and some cost $17 each. In all, he spent $128. Which system of linear equations re

Question

KatRina [158]

3 years ago

5

Joel bought 8 books. Some books cost $13 each and some cost $17 each. In all, he spent $128. Which system of linear equations re

presents the given situation?

Mathematics

1 answer:

Phantasy [73] · Answer 1 · 2022-03-28T22:13:01+03:00

Phantasy [73]3 years ago

4 0

If there are x $13 each books and y $17 each books, then we can build the following equations:
x + y = 8 (or y = 8 - x)
13x + 17y = 128 (or y = 128/17 - 13x/17)
:)