The amount of stretch of a hanging spring versus the mass attached to the bottom of the spring was measured for different masses. The results are shown mass (grams) 2 4 8 10
stretch (centimeters) 4 8 16 20
What is the constant of proportionality between the mass and the amount of stretch?
0.5 centimeters per gram
O 0.5 grams per centimeter squared
2.0 centimeters per gram
2.0 grams per centimeter squared

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?