What is the value of x in the equation 3x-4y=65, when y=4?
a. x= 13 1/4
b. х=21 2/3
c. х = 23
d. х= 27

Pls! does anybody know a shortcut for answering these types of questions in the future?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost