CAN SOMEONE PLEASE HELP ME ON THE TOP ONE

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

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers