Question

In order for Brady to earn a B in his biology course, his test scores must average at least 80%. On the first 5 tests, he

has an average of 77%. There is one test remaining in the course. Write an inequality then find what is the
minimum score Brady needs to earn on the last test to receive a B in the class?

Answer 1

x ≥83%

Explanation:

77%+x/2=80% (×b.s by 2)

77%+x=160%

x=160%-77%

x=83%