These are the numbers for the variables x=-1 y=6 z=4

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =