Deshawn is selling tickets to a play. adult tickets cost $13 each and student tickets cost $9 each. after one day of sales, deshawn sold 23 tickets and took in a total of $271. how many student tickets did deshawn sell?

The number of student's tickets sold was 7

Step-by-step explanation:

Let

x ----> number of adult's tickets sold

y ----> number of student's tickets sold

we know that

----> ---> equation A

----> equation B

solve the system by substitution

substitute equation A in equation B

solve for y

therefore

The number of student's tickets sold was 7

the first one, all those points on the line just make a strait line.

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: