What is the lcdof two numbers if one number is a multiple of the other give an example

What is the standard form of -5x^2+2x^4-11+x^3+3x

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online