Please answer this correctly without making mistakes

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Find x to the nearest hundredth place

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil