By what percent will the fraction change if its numerator is increased by 25% and its denominator is increased by 20%

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3