In a science class student made rockets out of empty 2-liter bottles. when launched, karen's rocket reached a height of 12 and 1/2 ft. sam's rocket reached a height 1 and 2/5 times greater than karen's rocket. how high did sam's rocket go?

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $