PLEASE PLEASE HELP THIS IS A TIMED TEST

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

10x − 5y + 14 = 0 whats the answer pls

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.