Which answer is the most reasonable estimation?
cylvia is making 100 sandwiches for a banquet. she makes 47 sandwiches. then she takes a break and makes 22 more. about how many more sandwiches does cyliva have to make?
a. about 80
b. about 40
c. about 70
d. about 30

How do you answer this question? (step by step)

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.