What is the slope of y = -4x - 7

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.