What is the answer mane

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

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 of the following is true for the relation f(x)=2x^2+1