A compound inequality describes a number that must satisfy two limits at once. Words such as “between” cue you to put the weight between a lower and an upper bound; “inclusive” means the bounds count too. Check each choice against both limits. Passing only one can still leave a weight outside the allowed range.
Hints
- Hint 1
A compound inequality links two comparisons at once. Put the parcel’s weight in the middle, with the lower allowed weight on its left and the upper allowed weight on its right.
- Hint 2
The word inclusive means a parcel weighing exactly as much as either limit would qualify. Which weight is at least the minimum and at most the maximum?
Step-by-step
Check both weight limits
Step 1Write the allowed range
No Desmos needed. Compare the choices with the two limits. Let be the parcel’s weight in ounces. Inclusive means the endpoints count, so the weight must be at least and at most :
Both limits must hold at once.
- Step 2
Find a weight inside the range
Check against both limits:
So a parcel weighing ounces qualifies for the standard shipping rate. Choice C.