Answer:
No, he is not correct because the constant in his answer should have been 21 not 7.
Step-by-step explanation:

Therefore, the correct answer is the fourth; he should have put 21.
This point 2 3/4 on the number line
Answer:
38.75
Step-by-step explanation:
perimeter = 2(15.6+3.8) =38.8
lower bound = the smallest value that would round up to the estimated value =38.75
X can equal -7 or 1
X = -7 and 1
Answer:
Udjdjerjrkr so ha
Step-by-step explanation: