If Keith is represented by x, and Joe is three less than Keith, Troy is represented by x-3.
Then, we know that Joe exercises for twice the amount of time as Troy, we multiply the expression for Joe by two.
Keith = x
Troy = x-3
Joe = 2(x-3)
9!/(8!*(9-8)!)=9
or just use a calculator and use the nCr function
Answer:
b x 390 =339
Step-by-step explanation:
Thousandths I'm pretty sure
