Question

20 Points:

Answer 1

Answer:

x=105

y=150

Step-by-step explanation:

Systematic solution:

$\left \{ {{x+y=255} \atop {x+5y=855}} \right.$

$\left \{ {x=255-y} \atop {x+5y=855} \right.$

255-y+5y=855

4y=600

y=150

x=255-150=100

Answer:

x=105

y=150

Answer 2

Answer:

D. 105 students and 150 guests

Step-by-step explanation:

105 students and $1 for each ticket is $105.(105 x 1 = 105)

150 guests and $5 for each ticket is $750.(150 x 5 =750)

$105 + $750 = $855