Use the permutation formula to solve a problem when n = 15 and r = 4. A.
B. 54
C. 3,276
D. 32,760

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Y= a(x-3)squared-1 what is the value of a