Q. Mary lost 30 pounds. Before her diet she weighed 180 pounds. What is the
percent of change?

16.67%

Step-by-step explanation:

A fraction consists of two numbers and a fraction bar:

30/180

The number above the bar is the numerator: 30

The number below the bar is the denominator: 180

Divide the numerator by the denominator to get fraction's value:

Val = 30 ÷ 180

30/180=16.666666667

16.666666667= 16.67%

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)