Answer:
The answer to your question is 60.7 km
Step-by-step explanation:
This is a ratio and proportion problem, so let's write the proportion.
3 : 26 : : 7 : x
1.- Convert the expression to a fractional form.
2.- Solve the proportion, cross multiplying and back off.
x =
x = 60.7 km
6 and 7
To evaluate f(3), substitute x = 3 into f(x) , that is
f(3) = 2(3) = 6
To evaluate g(f(3)), substitute f(3) = 6 into g(x)
g(6) = 6 + 1 = 7
6
Double negative = positive
18 is the correct answer