Sin(a)=1/4 use trig identity sin^2(a)+cos^2(a)=1 to find cos(a)

Horace's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horaces speedometer?

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate