Question

Harold wants to get at least a grade of 84 in math class. His grade will be the average of two test scores. He got a 77 on the first test.

a. Write an inequality to represent the situation.

b. What is the least grade Harold needs to get on his second test to meet his goal?

Answer 1

The first answer is- (77+x)/2=84

The second answer is- Harold needs at least a 91

first, you multiply both sides by 2; 77+x=168

then you subtract 77 from both sides; x=91

then you plug it back in to check; (77+91)/2=84 ; 168/2=84 ; 84=84