If 4n = 3.60, which is the value of n? (it's probably a simple question, but i can't decide between 0.9 and 9, if you can me, ! )

a. 0.09 b. 0.9 c. 9 d. 90

How do you solve a question like this?

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

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