Can somebody please help me out with #7 8 and 9. And if you just do one that’s cool too. Thank you! Btw it’s geometry.

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

Write 17/20 as a decimal and as a percent.

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