Help plz I will give brainliest and any unhelpful answers will be reported

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup