What is 42÷(15-2 by the power of 3

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

The statement tan theta= -12/5, csc theta=-13/12, and the terminal point determained by theta is in quadrant two

If f(x)=3 over x+2 - square root x-3 then f(7)=