What happens to the value of the expression 70-3g, minus, 3, g as increases?

The value of the expression decreases

Explanation:
The given expression is:
70 - 3g
This means that we are removing 3g from 70.
As the value of g increases, the value of 3g will also increase. This means that the amount we remove from the 70 will also increase which will lead to a decrease in the value of the expression.

Examples:
At g = 1:
70 - 3g = 70 - 3(1) = 70 - 3 = 67
At g = 2:
70 - 3g = 70 - 3(2) = 70 - 6 = 64
At g = 3:
70 - 3g = 70 - 3(3) = 70 - 9 = 61
At g = 4:
70 - 3g = 70 - 3(4) = 70 - 12 = 58

We can note that as g increases by 1, the value of the expression decreases by 3.

Hope this helps :)