GEOMETRY For Exercises 28 and 29, The length of a rectangle is 3n + 2 and its width is n - 1. The perimeter of the rectangle is
twice the sum of its length and its width.
28. Write an expression that represents the perimeter of the rectangle.
29. Find the perimeter of the rectangle when n = 4 inches.
Glencoe Algebra
Graw-Hill
10

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

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u. s. dollars for every 100 euros. b) gabriella averages 100 u. s. dollars for every 25 euros. c) gabriella can exchange 75 u. s. dollars for 100 euros. d) gabriella can exchange 100 u. s. dollars for 75 euros.

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?