I really need help this is my last question

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by p(c)= -15c(c-8) what current will produce the maximum power?

Find an equation of the line that has intercepts (1,0) and (0,4).