(-4,0) (3,-5) I don't know if they mean two ordered pairs so I'm pretty sure this is right
Answer:
Mrs. Cook has to grade 63 tests.
Step-by-step explanation:
In order to find the answer, first you have to calculate 80% of the number of tests Ms. Morris has:
35*80%= 28
Then, you have to add the number that represents 80% to the number of tests Ms. Morris has to grade:
35+28=63
According to this, the answer is that Mrs. Cook has to grade 63 tests.
-0.4x=2.5 divide both sides by -0.4
x=-6.25