Dose c+2 increase or decrease or stay the same

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18