HELP!!
1: Ms. Gallaher went to the nail salon to have a manicure and pedicure. The manicure and pedicure costs $55 and a 6% sales tax needs to be added. She wants to leave a 20% tip. What was her total bill including tax and tip?

2: A salesman needed to sell a four–wheeler. He priced it at $3,500 the first day it was on the market. The second day he reduced the price by 15%. What was the price of the four–wheeler after this reduction?

a. $4,025.00
b. $3,150.00
c. $2,975.00
d. $2,528.75

3: A jacket cost $69 and is on sale for 35% off the orginal price. What is the discount? What is the final sale price?

4: Santiago ordered a pizza for $40. He left a 15% tip. What was the total cost to the nearest cent?

5: For her job, Caitlin earns 12% commission on all of her sales. Suppose Caitlin had a total sale of $795 last week. How did she earn in commissions?

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

the answer is 1/4

step-by-step explanation:

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;

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later