David measured the heights of 10 classmates. He found the mean of their heights to be 54.8 inches. He then added in his own height and found the mean again. With David’s height, the mean was 55 inches. What is David’s height?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25