Let a=x^2+4. rewrite the following equation i terms of a and set it to equal zero. (x^2+4)^2+32=12x^2+48 in resulting equation what is the coefficient of the a in the resulting equation, what is the constant?

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?