20×+12> 14×+30 a. ×< 3 b.×< 7 c.×> 7 d.×> 3

Let w = 4. enter > , < , or = to compare the expressions. 3w² + 1 10w + 8

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

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?