NEED ASAP! A manufacturing plant earned $80 per a man-hour of labor when it opened. Each year, the plant earns an additional 6%per man-hour. Which expression gives the amount the plant earned per a man-hour of labor 3 years after it opened? ^=Multiply

A.80+(1+0.06)(1+0.06)(1+0.06)
B.80(1+0.06)(1+0.06)(1+0.06)
C.80+0.06^0.06^0.06
D.80^0.06^0.06^0.06

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25