What is the shading style of the 44 figure in the sequence below?

What is sin 7x/4 ? i need on this urgent trig

The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g