All you do is plug in -7 so you get f(x)=8(-7)*15 you get -56*15 which goes to -840
999999%
Step-by-step explanation:
Answer:
Teachers to Students: 1:9, 1 to 19, 1/19
Students to teachers: 19:1, 19 to 1, 19/1
(If this is wrong the answers might be different for you but this is what I got an I was right)
The answer is 81 because 27 x 3