Sarah and Michelle bought pizza and lemonade for a party. . Sarah bought 3 pizzas and 2 bottles of lemonade for $31.
• Michelle bought 2 pizzas and 4 bottles of lemonade for $30.
Which of the following systems of equations could be used to find p, the cost of one pizza, and b, the cost of a bottle of lemonade?

A. p + b = 31
p + b = 30

В. Зp + 2b = 30
2p + 4b = 31

C. 3p + 2b = 31
2p + 4b = 30

D. 5p + 6 = 61
p + b= 30 ​

C

Step-by-step explanation:

3p + 2b  = 31

2p + 4b = 30

A pizza costs $8. A bottle of lemonade costs $3.50

b) well because you get well

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: