Hey plz help me with these, I need it by 3:23 plz show the work and send it

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

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