What is the value of f(x) = 9^x when x = -2?

a) 1/81
b) 81
c) 1/18
d) 18

Which fraction is not equivalent to 8/12 a. 2/3 b. 24/36 c. 4/10 d. 6/10

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons