A music store marks up the instruments it sells by 30%.
1) If the store bought a guitar for $45, what will be its store price?
2) If the store bought a trumpet for $80, what will the price be in the store?
3) How much will the store make off the sale of the guitar and the trumpet?

the guitar is now $58.5, the trumpet is now $104 both together is $162.5

Step-by-step explanation:

30% more would be $1.30 for each dollar so you multiply the original price by 1.30

option: d is correct

step-by-step explanation:

the answer

b. they are parallel and will never intersect.