486 is 60% of what amount?

1 answer:

7 0

With these types of problem, just remember to replace "is" with "="
and remember 60% also = 0.6
and let's called the amount x
so
486 = 0.6x
divide both sides by 0.6
and you'll get x which is the amount you are looking for

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Answer:

See attached

Step-by-step explanation:

All answers in one graph, refer to attached

The function we need is

C(x) = 100(2*5280 - x) + 180 $\sqrt{800 +x^2}$ , where 2*5280= 2 miles

Table included as well

The vertex is about x = 19 ft which corresponds the minimum cost

Any other value, including negative reveal greater cost

Note. there is a bit confusion over 2 miles or 2000 ft, but the graph is going to be same in shape and vertex for x, the value for cost will be different