The one-to-one functions g and h are defined as follows. g={(-9, 2), (-1, -3), (2, 3), (9, 4)}
h(x) = 3x-4
Find the following.
g^-1 (2) =?
h^-1 (x) =?
(h • h^-1) (2) =?

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

How are algebraic expressions evaluated using substitution?