A. Let x be the amount more you must spend to get free shipping. Then, the equation is:
$69.95 + x = $75
B. To solve the inequality that represents how much more you must spend to get free shipping, we can use:
$69.95 + x ≥ $75
Subtracting $69.95 from both sides, we get:
x ≥ $5.05
Therefore, you must spend at least $5.05 more to get free shipping.
C. It depends on whether the cost of the additional item plus the $69.95 exceeds $75. If the cost of the additional item is less than $5.05, then it may be worth purchasing in order to get free shipping. However, if the cost of the additional item plus the $69.95 is more than $75, then it may not be worth it as the shipping cost would still be less than the cost of the additional item.