Write an equivalent expression for 3(2z+4)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?