A balloon in the shape of sphere is being inflated at a rate of w cm3/min. The rate of change of radius is 2 cm/min when its volume is 487 cm3. Find the
value of w
A. 27.40
B. 68.50
C. 274.02
D. 685.02

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

Which number line correctly shows 0.8 + 0.3?

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet