Polygon

triangle

quadrilateral

pentagon

hexagon

heptagon
sides

3

4

5

6

7
interior angle sum

180

360

540

720

900

use the chart and predict the sum of the measures of the interior angles for an nonagon.
a.

1080

c.

1440
b.

1260

d.

1630

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²