Of these three linear functions represented below, what has the greatest rate of change?

-function 1: y=2x+6

-function 2: (this is a table)
x|y
-1|3
1|15
2|21

-function 3: a number y is less than half a number x.

a) function 3 has greatest rate of change
b) function 2 has the greatest rate of change
c) function 1 has the greatest rate of change
d) all three functions have the same rate of change
*would like the steps to solve this also.

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?

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample