Which best describes the structure outlined in the
bridge
It is a parallelogram because it has one pair of
opposite sides that is parallel.
It is a parallelogram because it has exactly one pain
of opposite sides that is congruent.
It is a trapezoid because it has exactly one pair of
opposite sides that is congruent.
It is a trapezoid because it has exactly one pair of
opposite sides that is parallel.

people went from manufacturing one object at a time by hand to manufacturing many objects in factories

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).