What is the area of a circle with a radius of 9 cm? (Express your answer using π.)

A.

81π cm2

B.

18π cm2

C.

324π cm2

D.

9π cm2

6x - 2y = - 16 4x + y = 1

Jalen spent $21.60 of the $80 he got for his birthday what percent of his money did he spend?

When adding two negative integers, how do you determine whether the answer will be positive or negative?

A guitar string vibrates back and forth 88 times in 1 minute. what is its period in seconds?

Suppose j and k vary inversely, and k=3 when j=12. Find k when j=18. 2 4 24 36

Mrs. Moore's class is conducting an experiment to find the probability of pulling certain colors from a bag of 25 marbles.

Find the LCM of the numbers using lists of multiples. 1: 4,14 2: 6,20 3: 12,28

What is Factor tree of 495?

Lynda is flying her kite at the end of a 40m string. The string makes and angle of pie/4 with the ground. The wind speed increases and the kite flies higher until the string makes an angle of pie/3 with the ground.

What is the sum of the angles of a polygon with s sides is 2,520