Question

What happens to the value of the expression 80-2r as r decreases?

Answer 1

If r is a smaller number, the value increases. If r is larger, the value will decrease.

For instance:

80-2(4)

80-8=72

80-2(2)

80-4=76

Answer 2

Answer:The value of the expression increases as r decreases.

Explanation:

To find : What happens to the value of the expression as r decreases?

Given Expression: 80-2r

We check for different value of r as decreasing order,

r 80-2r

5 80-10=70

4 80-8=72

3 80-6=74

2 80-4=76

1 80-2=78

As r decreases the value of expression increases.

Therefore, the value of the expression increases as r decreases.

Hope this helps!