I need some help with these

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? )

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate