If a = 2 then what is 3a + 1?

Carl wants to buy a television that cost $500 including taxes. to pay for television he will use a payment plan that requires him to make a down payment of $125 and then pay $70.50 each month for six months what is the percent increase from the original cast of the television to the cost of the television using a payment plan.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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