Use the permutation formula to solve a problem when n = 8 and r = 2. A. 56
B. 672
C. 6,720
D. 40,320

How many different ways can you make change for $.50 using only nickels, dimes, and quarters?

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.