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

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.