Cole can learn how to play tennis. But if he saved the money, he can save up and get something bigger, or save up for college. There is only so much he can do with a tennis racket except for using it to learn a new sport.
Using the general form; y = mx + b, we get:
y = 4x + 6
X = 36/5
Or x = 7.2
21 + x = 6x - 15
21 = 6x - 15 - x
21 = 5x - 15
21 + 15 = 5x
36 = 5x
36/5 = x
12 gallons of gas can be bought from $30 where gas costs $2.42 per gallon.
<u>Solution:</u>
The gallons of gas bought can be calculated by dividing the total amount possessed by cost of gas per gallon.
Here total amount possesses is $30 and cost of gas per gallon is $2.42.
Gallons of gas bought = 

Answer:
Multiyply all 3 numbers to get your answer.
Step-by-step explanation:
4.5*2*2