A boat's crew rowed 7.5 miles downstream, with the current, in 1.5 hours. the return trip upstream, against the current, covered the same distance, but took 2.5 hours. find the crew's average rowing velocity in still water and the average velocity of the current.

Average rowing velocity of boat in still water is 4 miles per hour and average velocity of the current is 1 mile per hour.

Step-by-step explanation:

We are given the following in the question:

Let x be the average rowing velocity of boat in still water and y be the the average velocity of the current.

The boat rowed 7.5 miles downstream, with the current, in 1.5 hours.

Velocity with the current =

Thus, we can write the equation:

The return trip upstream, against the current, covered the same distance, but took 2.5 hours.

Velocity against the current =

Thus, we can write the equation:

Solving, the two equations:

Thus, average rowing velocity of boat in still water is 4 miles per hour and average velocity of the current is 1 mile per hour.

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.