A batch of donuts required 2/1/2 pines of glaze if a donut was making 1/2 of a batch how much glaze would they need

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible