For every hour of exercise, James’s resting heart rate decreases by about (A. 1 B. 5 C. 15 D.20) beats per minute. His resting heart rate is about (A.50.5 B.70 C.77.5 D.82.5) beats per minute when he exercises hours a day.

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

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%

Can someone show me step by step how to do this?