Reba needs to simplify the expression below.
61/2 + 3.5x 2-7 divided by 3
which operation should she perform first?
a. addition
b. subtraction
c. multiplication
d. division

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.