Joe drove 405 miles in 7 hours. He drove at a rate of 55 miles per hour during the first part of the trip and 60 miles per hour during the second part. How many hours did he drive at a rate of 55 miles per hour?
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Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)