Answer:
D x≥4
Step-by-step explanation:
−7 ≥ 13−5x
5x ≥ 20
x ≥ 4
Answer:
2nd option
Step-by-step explanation:
4 + (-3) = 1 because the signs mismatch, something cannot be both positive or negative. When the signs are the same, whether it be both positive or both negative, the answer will always be positive, while if the signs are mismatching the answer will always be negative.
Hope I helped!
Answer:

Step-by-step explanation:

Answer:
6
Step-by-step explanation:
You take the most amount studied (18) and the least amount studied (12) and subtract them and that would be the range