How would you express as a unit rate: morag typed 60 words in one minute

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?

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

The quotient of 15 and a number is 1 over 3 written as an equation