Answer:
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Step-by-step explanation:
Answer:
a = d/0.5t²
divide both sides by 1/2t²
Answer:

Step-by-step explanation:
Given the function: 
f(x) =number of days it would take to complete the project
x =number of full-time workers.

The domain of a function is the complete set of possible values of the independent variable.
In this case, the independent variable is x, the number of full-time workers. We have shown that x cannot be zero as there must be at least a worker on ground.
Therefore, an appropriate domain of the function f(x) is the set of positive integers (from 1 to infinity).

The equation is
5x - 13 = 3x + 21
when solved, we get
x = 17