Aschool has 18 classes with 35 students in each class. in order to reduce class size to 30,how many new classes have to be formed?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Consider the function f(x)=-5x+3 what is f(-2)