Aresearcher divides participants into groups that will engage in low, moderate, or intense levels of exercise. the total calories consumed by participants following the exercise are then recorded. what type of statistical design is appropriate for this study?

1. use commutative property to reorder the terms.2x+81=0.2. move the constant to right side by adding its opposite on both sides. 2x+81-81=0-81.2x=(-81).3. divide the equation on both sides.2x ÷ 2 = 81 ÷ 2.x = -81/2. your answer is -81/2. if you need to simplify it into a decimal, it’s -40.5.

2x=70 x=70/2x=35thats the answer.