My little cousin asked me to help her with her Alg 2 homework because she knew that in high school I had either honors or AP math every year.

But I don't remember any of what she's asking me, except for matrices, and I feel so bad, seeing as she's been sick and hasn't learned this and was counting on me. So could anyone help out?

-A school held a basketball game.

An adult ticket is $3, a student ticket is $1.

292 tickets were sold. In total, the school made $470.

Write an solve a system to the amount of each kind of ticket.

-Which expression can be used to substitute for y in the first equation of this system?

5x-2y=8

x-y=1

A) x - 1

B) x + 1

C) 1 - x

D) 1 + x

and finally,

-Krista works for $5/hour at the video store and $7/hour landscaping. She has to work at least 4 hours a week at the video store but she can't work more than 15 hours a week, total. Write out an expression the the maximum she can earn in a week. Define the variables and answer what the constraints are. Give coordinates as if you were to graph this.

Could you please help?

Thank you! :)