Answer:
x = 3.16
Step-by-step explanation:
x * x = 10

square root both sides

x is appr. 3.16
12(.25)= 3. 12-3= 9 for student tickets
x = adult tickets
y = student tickets
x + y = 55
12x + 9y= 585
-12x - 12y = -660
-3y = -75
3y = 75
y = 25 student tickets
x + 25 = 55
x = 30 adult tickets
Answer:
-3
Step-by-step explanation:
look at the hint: slope (most call it gradient) = change in y/change in x
so you take 2 x and y variables and subtract
15 - 9 = 6 ← change in y
0 - 2 = -2 ← change in x
slope (gradient) = 6/-2
slope (gradient) = -3