Hey there! The answer is 30 hours!
Work: 500 - 200 = 300
15 x 20 = 300
200 + 300 = 500
Answer:F is a unknown number
Step-by-step explanation:Isolate the variable

According to the rule of exponents
, i.e. when two terms are in division with same base , we subtract the exponents
So


Or
x to the 3 fourteenths power
"Completing the square" is a step in the solution of quadratic equations. It can be accomplished without the guesswork or trial-and-error associated with methods like factoring, and it always leads to a solution. It is the method by which the quadratic formula is derived.
<span>
f(x) = 2(3x)
Exponential functions represent the initial value outside of the parentheses so if 2 is the initial value it has to be on the outside of the parentheses.
Exponential growth formula.
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<span>a represents the initial value.</span>