Last one (for now) Which of the following relations describes a function?
A.
{ (-1, -2), (-2, -1), (1, 2), (2, 1) }

B.
{ (1, 1), (1, 2), (2, 1), (2, 2) }

C.
{ (1, -1), (1, 1), (2, -1), (2, 1) }

D.
{ (0, 0), (0, 1), (1, 0), (1, 1) }

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 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 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.