Step-by-step explanation:


f(x) = -37
Domain is all real numbers

Range is only {-37}

43
48 - 27(since they left) + 22(since they joined) = 43
He can fill 7 glasses because 1/4 can go into 3/4, three times and 1/4 can go into 1, four times ( 1 is the same as 4/4) then add 3+4 which equals 7.