If the value of x is negative what must be true about 10 - x

Which expression is equivalent to? assume x > 0 and y > 0.

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

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?