<u>old:</u> $16
<u>new:</u> $20
<u>percent increase</u>
-> formula: (new-old / old) x 100
(20-16 / 16) x 100
4/16 x 100
0.25 x 100
answer: 25% increase
457 irk sorry I don’t do this
Wait so are the sides of the octagon 9 inches each or do we have to find that?
1) b. 8
2) b. 15
Do you need an explanation?