Which expression represents the volume, in cubic units, of the composite figure?

volume of sphere = 4/3*PI*r^3

volume of cylinder = PI*r^2*h

so combining the 2 equations you would have A as the answer

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt