Answer this fast and I’ll make you what are perimeters of the triangles shown are equal

What is the frequency of the sinusoidal graph?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

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?