Suppose p is the predicate defined by p(x, y) = x is friends with y, where x and y are people. (no one is considered to be friends with themselves.) translate the formal expression vx=y=z(y + z a p(x, y) a p(x, z)) into english.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

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.

How can writing phrases as algebraic expressions you solve problems?