What is the range of the exponential function y=5•2^x

What is the slope of the line that contains the points (-2,1) and (0,-3)

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.