What is it called when two angles add to 90?

5. (04.07)which of the following exponential functions goes through the points (1, 12) and (2, 36)? (2 points)f(x) = 3(4)^xf(x) = 4(3)^-xf(x) = 3(4)^-xf(x) = 4(3)^x

Pls never taught i’m really confused and i rlly need

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?