Children in elementary school are evaluated and classified as non-readers (0), beginning readers (1), grade level readers (2), or advanced readers (3). the classification is done in order to place them in reading groups. what is the appropriate scale of measurement?

a. nominal
b. ordinal
c. interval ratio

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

Write the slope intercept equation for line ab.

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4