Which function has an inverse that is also a function? g(x) = 2x-3
k(y) = -9x2
f(x) = [X + 21
w(x) = -20

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

What is the sum of these mixed numbers 2 1/8 + 4 3/8

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.