Question

I need help with this please! I want someone to go through the steps with me, not tell me the answer. Thanks~! ^_^

A store had 100 t-shirts. Each month, 30% of the t-shirts were sold and 25 new t-shirts arrived in shipments. Which recursive function best represents the number of t-shirts in the store, given that f(0) = 100?

A. f(n) = f(n − 1) ⋅ 0.3 + 25, n > 0

B. f(n) = 100 − f(n − 1) ⋅ 0.3 + 25, n > 0

C. f(n) = f(n − 1) ⋅ 0.7 + 25, n > 0

D. f(n) = 100 − f(n − 1) ⋅ 0.7 + 25, n > 0

Answer 1

@zepdrix

Answer 2

C

Answer 3

Can walk me through the steps?

Answer 4

month 0 shirts 100

Answer 5

month 1 sold 30% of 100,

left 70 new 25
total 95

Answer 6

month 2 sold 30% of 95 left

0.7*95 new 25

total 0.7*95 +25 option C follows the pattern

Answer 7

Hmm. I think I got it. Let me see.

Answer 8

okay. Good. I gtg. bye.

Answer 9

Thank you for helping me! Cya! ^_^

Answer 10

yw