A boat travels 30 miles upstream in 5 hours. The return trip downstream takes 3 hours. If the boat travels at the same rate on both parts of the trip, what is the rate of the current, in miles per hour?

Suppose you want to know whether the eighth-grade music students at a school spend more time practicing their instruments or playing computer games. Explain how you would get a representative sample from the population.

Marcus dives from the surface of the ocean to a reef 18 meters below sea level. What integer represents Marcus location relative to the surface? How far does Marcus have to go to return to the surface?

Which equation has a graph parallel to the graph of 7x=14y-8 A y=-2x-7 B y=-1/2x+4 C y=1/2x+1 D y=2x+9

7a2-9a=24 what is the answer for this

What is the domain and range for { (0,-5), (1,3), (2,2), (0,4) (-5,6), (3,4) }

You want the volume of the box to be 9 cubic inches. Find the rational solution (s) of the equation. Then use polynomial long division to find the other solution (s). What are the possible side lengths of the box?

A couple has 4 children ages 9, 6, 4, and 1. What is the probability that they are all girls?

Use the quadratic formula to solve 2y² + 6y - 8 = 0. {-4, - 1} {4, - 1} {-4, 1} {4, 1}

Find all real zeros of the function y = - 3x+9

Factor the following expression using the GCF 10dr-60r