Need ! find (g o f)(3) f(x)= |x+2| g(x)=-x^2

Ineed to learn how to solve this problem

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

There are a total of 75 students in the robotics club and science club. the science club has 9 more students than the robotics club. how many students are in the science club?