Gina is a server at a restaurant. A table spends $34 on food and leaves Gina a 18% tip. What is Gina's tip? A. $6.12
B. $40.12
C. $26
D. $8.24

A

Step-by-step explanation:

34.00 x .18 = 6.12

Take 18 and put a decimal in front of it and multiply it by the cost (34.00)

example if it were 20.00 and the tip was 5%

20.00 x .05

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)