Mr. and Mrs. Potato head went to dinner. The bill was $78.95. They decided to leave a 13% tip. What is the total amount of money they
need to leave, including the tip?
O $91.95
O $10.26
O $89.21
O $20

C. $89.21

Step-by-step explanation:

First...Eliminate

$10.26 and $20

They are under the bill total which is $78.95

Then 13% is actually 0.13

13/100 = .13

take 0.13 ×$78.95= 10.2635. ( I used a calculator)

$ 10.2635 of 13%

Take 10.2635 + $78.95(the bill)= Total cost

10.2635 don't forget to line up the demicals

+ 78.95Or use a calculator

89.2135

$89.21 is your total

step-by-step explanation:

y=mx+b

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;