Use the associative law of addition to write an equivalent expression.w + (xy + z)
A. w + (yx + z)
B. w(xy + z)
C. (w + xy) + z
D. w + (z + xy)
Answer: C
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Find the mode or modes for the list of numbers.The weights of cross-country runners (in pounds): 125, 141, 156, 125, 188, 199, 162
A. 156 pounds B. 91 pounds C. 125 pounds D. 141 pounds
Solve the problem.The volume of wood in a tree varies jointly as the height of the tree and the square of the distance around the tree trunk. If the volume of wood is src="https://sciemce.com/media/4/ppg__10703192029__f1q23g5.jpg" alt="" style="vertical-align: -4.0px;" /> around the trunk?
A. 89 ft3
B. 84 ft3
C. 72 ft3
D. 80 ft3
when the height is 
and the distance around the trunk is 
what is the volume of wood obtained from a tree that is 
tall having a measurement of
Solve the problem.A car is traveling at 50 mph. If its tires have a diameter of 26 inches, how fast are the car's tires turning? Express the answer in revolutions per minute. If necessary, round to two decimal places.
A. 654.41 rpm B. 646.41 rpm C. 4061.54 rpm D. 1292.82 rpm
Use radical notation to write the expression. Simplify if possible.165/4
A. 128 B. 512 C. 32 D. 256