The statement on the bottom left is correct. (6 students studied for 20 to 24 hours)
We have the expression:

And want to evaluate in y=5, this means we have to replace y in the expression for 5 and calculate the value of the expression, so:

The expression is 30 when y=5.
7/10 because you add seven and three which equals ten, and seven of them are dimes.
Answer:
where is the figure u forgot to attach the figure
Answer:
B and D
Step-by-step explanation:
they're the explanations.