The mass of a radioactive element at time x is given by the equation below, where c is the original mass and h is the half-life of the element. the half-life of a substance is 4.9 years. how long will it take for 36 grams to decay to 10 grams? (round your answer to one decimal place.) m(x)=c(.5^x/h)

P= $1400,300 r = 7 1/2% t = 4 what is i ? $4.29 $429.00 $4290.00

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?