cuanto es (2a + 3b + c) + (5b + 8c + a) ??? cuanto es o como se resuelven estas operaciones lo necesito por que no entiendo

Which function is increasing? o a. f(x)=(1/15)* o b. f(x)= (0.5)* o c. f(x)=(1/5)* o d. f(x) = 5*

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection