If cos(x)=−1/4 and x is in quadrant III, find the exact values of the following without solving for x:

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

What is the absolute value of the complex number -4-sqrt2i