Aprofessor gives 3 tests and uses a weighted average to determine the final grades in his psychology class. the weights are as follows: test 1 = 30%, test 2 = 20%, and test 3 = 50%. if a student scores 95 on the first test, 70 on the second test, and 80 on the third test, what would be her final score?

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!