Activity 4: How Fast Am I? (Speed/Travel Problem) A passenger train can travel, on average, 20 miles per hour faster than a freight train
If the passenger train covers 390 miles in the same time it takes the freight train to cover 270
miles, then how fast is each train?
Solution:
Step 1:
Step 2:
Step 3:
Step 4
Step 5

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2