Assume f(x)=2x+8 and g(x)=5. what is the value of (f+g)(3).

assume f(x)= -2x+8 and g(x)=5x. what is the value of (f o g)(3).

Yao xin puts 3/10 liters of potting soil in each pot for planting flowers. she has 5 2\3 liters of potting soil. how many pots can yao xin fill?

What is the equation of the graph below? y=sec(x)-4

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?