Since 5,292 is between 3,600 and 36,000 the quotient is between ? and ?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

What are the values of each variable in the diagram below?

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$