Brandon owes his brother $100. He will repay his brother $5 each week. Which expression gives the amount in dollars Brandon will still owe his brother after n weeks? 5−100n

100−5n

5n−100

100n−5

100-5n

Step-by-step explanation:

For example:

Week 1: 100-5(1)= $95 left

Week 2: 100-5(2)= $90 left

Week 3: 100-5(2) $85 left

x=2 & x=1

step-by-step explanation:

7*1=7

7*2=14

7 is less than 21

14 is less than 21

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm