Agroup of 19 students want to see the show at the planetarium. the tickets cost $11 for each student who is a member of the planetariums frequent visitor program and $13 for each student who is not a member. the total cost of the students' tickets is $209.

let x represent the number of students in the group who are members of the frequent visitor program. write an expression in terms of x for the number of students in the group who are not members. then write an equation to determine the value of x.

the answer is 0.5 mpm

step-by-step explanation:

the line goes half way through the square each time (which is 0.5 or half of course) so that would mean its 0.5 mpm.

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".