Solve 20x - 8 = 18x + 6

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints