Wyatt went on a 40 mile bike ride. if his average speed was 7 1/2 miles per hour, how long did his trip take?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?