David is raising money for a school trip by selling packs of cookies and candy bars. the price of each pack of cookies is $1.50 and the price of each candy bar is $1. yesterday david made $15.50 and sold 2 more packs of cookies than candy bars. algebraically determine the number of packs of cookies sold and the number of candy bars sold.

$1.50(x)+ $1(y)

Step-by-step explanation:

you need to plug in x and y when answering a question like this.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times