Is the following relation a function?
x y
1 -2
1 -3
2 1
3 -2

a. yes
b. no

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.

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

If y varies directly as x2 and y=6 when x=6, find the constant of variation.