Use the substitution method to solve the system of equations

3x+2y=13

y=x-1

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Which of the following functions corresponds to the above sinusoid? a. 10 cos πx - 5 b. -5 sin x - 5 c. -10 cos πx/2 - 0.5 d. 10 sin πx - 5