I only need help on 2 questions i already did the first one and the second one please 2. use the histogram to answer the question

about how many students slept for 8 or more hours

A. 130

B. 45

C. 150

D. 25

3. how many more students watch 6 to 7 hours of tv a week than watch 2 to 3 hours of tv a week

A. 10

B. 8

C. 6

D. 7

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.