HELP PLEASE I NEED THIS DONE SOON

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

What expression is equivalent to (84+16)