20 is what percent of 80? Choose the equation to solve the problem

a. 20 = 80% ∙ x; 25%
b. 80 = 20% ∙ x; 400%
c. 20 = x ∙ 80; 25%
d. x = 20% ∙ 80; 0.25%

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.