Is -7+9=-9+7 true, false, or open?

A. True
B. False**
C. Open

Is 4x-3=19 true, false, or open
A. True
B. False
C. Open**

Which of the following is a solution to the equation 16=4x-4
A. -5
B. -4
C. 5**
D. 16

An art student wants to make a model of the classroom. The length of the classroom is 2.4 times it width. The length of the student’s model is 42 in. What should the width of the model be?
A. 17.5 in**
B. 20.5 in
C. 83.6 in
D. 100.8 in

4 answers

all correct.
good work
They are all still correct to this day but there are 2 more questions left
I meant one more
The answer for the final question is x=72
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