3. In 2005, 8.1 x 1010 text messages were sent in the United States. In 2010, the number of annual text messages had risen to 1,810,000,000,000. About how
many times as great was the number of text messages in 2010 than 2005?

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

well the answer to that is xoxoxo

step-by-step explanation:

answer: i feel you honey.

step-by-step explanation:

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%