<em>Choice-A</em> is the answer to this math problem.
Answer:
f(x) and g(x) are inverse functions
Step-by-step explanation:
In the two functions f(x) and g(x) if, f(g(x)) = g(f(x)) = x, then
f(x) and g(x) are inverse functions
Let us use this rule to solve the question
∵ f(x) = 3x²
∵ g(x) = 
→ Find f(g(x)) by substitute x in f(x) by g(x)
∴ f(g(x)) = 3(
)²
→ Cancel the square root with power 2
∴ f(g(x)) = 3(
)
→ Cancel the 3 up with the 3 down
∴ f(g(x)) = x
→ Find g(f(x)) by substitute x in g(x) by f(x)
∴ g(f(x)) = 
→ Cancel the 3 up with the 3 down
∴ g(f(x)) = 
→ Cancel the square root with power 2
∴ g(f(x)) = x
∵ f(g(x)) = g(f(x)) = x
→ By using the rule above
∴ f(x) and g(x) are inverse functions
39.95 + 9.80 = 49.75
70.23 - 49.75 = 20.48
20.48 / 0.32 = 64
The truck was driven 64 miles.
The expression which represents the perimeter, in centimeters, of the rectangle is; (18d +10f) centimetres.
<h3>Perimeter of a rectangle</h3>
Since the perimeter of a rectangle is given by the formula;
In essence, Perimeter, P = 2(2d – 3f) + 2(7d + 8f)
Ultimately, the perimeter of the rectangle is; (18d +10f) centimetres.
Read more on perimeter of a rectangle;
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