Find the mean of the following data: 9, 15, 17, 18, 6, 20, 8, 5, 18, 18, 10, 5, 14, 12, 10,7 a. 15 b. 12 c. 11 d. 18

The answer is 12 (so the letter B)

Step-by-step explanation:

9+15+17+18+6+20+8+5+18+18+10+5+ 14+12+10+7=192

Then if you count the amount of numbers you find that there is 16 numbers.

You then do 192 ÷16 which gives you 12

he sells x mount because thats eqivilqant to the maz and then divided into quarters

step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500