Two local hotels, X and Y, rent out rooms nightly. Let X represent the number of rooms hotel X rents out nightly, and let y represent the number of rooms hotel Y rents out nightly. The mean of X is 49, and the mean of Y is 58. Which
answer choice correctly calculates and interprets the mean of the sum, S = X + Y?
O us = 53.5; the hotels can expect to rent out 53.5 rooms, on average, each night.
O
s = 53.5; on one randomly selected night, the total number of rooms rented out will be 53.5.
Hs = 107; the hotels can expect to rent out 107 rooms, on average, each night.
s = 107; on one randomly selected night, the total number of rooms rented out will be 107.

107

Step-by-step explanation:

The hotels can expect to rent out 107 rooms, on average, each night.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

26

step-by-step explanation: