Create an expression that shows four less than five raised to the power of three

Someone me what is the area of this figure? 18m 18m 8m 16m

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?