17 which equation demonstrates the distributive property

a) 81 + 18 = 99

b) 81 x 18 = 18 x 81

c) 81 + 18 = 9(9 + 2)

d) (9 + 2)9 = 9(9 + 2)

it is given that 2(3 + x) = 6 + 2x. this is an example of the property
a) associative

b) commutative

c) distributive

d) identity

About 60% of the normal humanbeing's body weight is composed ofwater. how much of a 125 poundperson is water weight? f 72 pounds h 76 poundsg 75 pounds i 80 pounds

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.