The sum of two imaginary numbers is 9+15i. If one of the numbers is 4+3i, what is the other imaginary number?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.