rick and tina hiked at different constant rates. rick hiked 1/2 mile every 15 minutes or 1/4 hour. It took Tina 10 minutes to hike 1/4 mile. Find the distance each hiked in 1 hour.

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed