A ferryboat carries passengers and cars across a river that runs from north to south. The river is 0.4 mile wide. The downstream dock is on the east side of the river and 0.3 mile south of the west side’s upstream dock. The current in the river runs due south at 1.75 miles/hour. Find the speed and direction the ferryboat must take to make the crossing from the upstream dock to the downstream dock in 7 minutes.

b and c

step-by-step explanation:

16 is the absolute value

step-by-step explanation:

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).