(13 + 2) divided by (9-4) I have to show my work please help!

1. what is the measure of ∠abc? what is the measure of ∠abd?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )