1)how many different ways can a club choose a committee of 4 from 15 members?

2) how many permutations exist of the letters p, q, r, s, and t, taking four at a time?

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)