Bob and his best friend bill have the same birthday, but bob is 3 years older than bill. let the variable x represent bob’s age and y represent bill’s age. which equation models the relationship between bill’s age and bob’s age?
a. y = x/3
b. y = x + 3
c. x = y + 3
d. y = 3x
is the statement true or false? (ab)c = a(cb).
a. true
b. false