Estimate the sum or difference. use the benchmarks, 0, 1/2, and 1.

23/40-11/30

a 0
b 1
c 1/2

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

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?