Shipping rates for Company A and Company B are shown in the tables below. Which company has shipping rates that you can represent using an equation of the form
y = kx?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.

Which of these figures must be a rectangle?