The original price of a cell phone is $190. The sales tax is 4.9%. What is the total cost?

$199.31

Step-by-step explanation:

To find the answer, you have to do 190 x 4.9%, which is $9.31. You can also do 190 x 4 9/10, which you need to make the 4 9/10 an improper fraction, which is 49/10. 190 x 49/10 is 9.31.   190 + 9.31 is the answer ($199.31)

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!