translate the following phrase into an algebraic expression, the cost purchasing a fishing rod and reel of the rod cost $5 less than twice the cost of the reel

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

What is the number 321,000,000 in scientific notation? also what is the number? ?

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.