The inequality is .5d + 1 ≤ 10, which would yield the result of d ≤ 18
Step-by-step explanation:
In order to find this, we need to model the equation. We know that the constant is 1, and the coefficient of the variable, which needs to be multiplied by d is .5.
.5d + 1
Now we also know that this has to be less than or equal to the 10 dollars we have
