What the answer to y=2x+7 and y=4x-9 using substitution

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation

How many revolutions will a car wheel of diameter 28 in. make over a period of half an hour if the car is traveling at 60 mi/hr? the final answer is supposedly 21,609 but i have no idea how to get that, show work : )

Amap of british columbia has a scale of 1: 1 723 000. the distance on the map between prince george and cache creek is 8 11/16 in. what is this distance to the nearest mile