What is the effect on the volume of a sphere if the diameter is doubled?
A. The volume is multiplied by 2.
B. The volume is multiplied by 4.
C. The volume is multiplied by 8.
D. The volume is multiplied by 16.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

Factor the polynomial. b^2 + 4b + 4