Joey has a beach ball with a radius of 20 cm. what volume of air will it hold when fully inflated? [round to nearest tenth.]
a) 83.8 cm3
b) 251.4 cm3
c) 1676.2 cm3
d) 33,493.3 cm3

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.