Answer:-80
Step-by-step explanation:f(x)=2*2+4*-10
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:
5
Step-by-step explanation:
The first statement is true, because the two negative signs cancel each other out. However, the second is false because any time you multiply a positive number by a negative number the product is always negative. Therefore 4x-6=-24