One college states that the number of men, $M$, and the number of women, $W$, receiving bachelor degrees $t$ years since $1980$ can be modeled by the functions $M(t)=526-t$ and $W(t)=474+2t$ respectively.
Let $N$ be the total number of students receiving bachelors degrees at that college $t$ years since $1980$.
**Write a formula for $N(t)$ in terms of $M(t)$ and $W(t)$.**
$\qquad N(t)=$ [[☃ expression 3]]
**Write a formula for $N(t)$ in terms of $t$.**
$\qquad N(t)= $ [[☃ expression 4]]