HELP ME! i know this isn't math but people don't help me so i used this sudject anyways please & thank you <333

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate