1. 1 yard = feet
2.1 foot = inches
3.1 mile = feet

Step-by-step explanation:

1 yard is 3 feet

1 foot is 12 inches

1 mile is 5280 feet

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Step-by-step explanation:

for this case we have the following polynomials:

where,

h (x): is the cost of producing x soccer balls

k (x): is the revenue of x soccer balls.

then the profit is given by:

substituting values we have:

rewriting we have:

answer:

an expression that represents the profit of producing soccer balls is:

a) 14x - 8