F(x)•g(x)=
2(2x+1)=
4x+2
4(0)+2= 2
f(x)•g(x)=
2(2x+1)=
4x+2=
4(2)+2= 10
It is given in the question that
The gas tank of Tyrell's truck holds 19.8 gallons. when the tank empty, Tyrrell fills it with gas that costs $3.65 per gallon.
It means cost of one gallon of gas is $3.65 .
And the tank hold 19.8 gallon . So cost of 19.8 gallon is

Therefore about $72.27 it will cost to fill the tank .
Answer:
D
Step-by-step explanation:
The number in the parentheses is the rate of change. Because this number is less than 1 it is a decrease, so it is a decay.
The percent decrease is 1 - 0.63 = 0.37 = 37% decrease