Describe the transformation in each function as it relates to the graph of f(x) =x

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

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