Serenas mom is planning her birthday party. she bought ballons, plates, and cups. serenas mom bought twice as many plates as cups. the number of ballons . serenas mom bought was half the number of cups. if serenas mom bought 84 items , how many of each item did she buy

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.