Ive been stuck on this!

a store pays $120 for a television. the store sells the television for $300. your classmate says that the markup is 150% because $180$120=1.50$180$120=1.50. is your classmate correct?

Which system of linear inequalities is represented by the graph?

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

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left