Start with

Multiply both sides by 5:

The answer is C) y=-5/2x-3
Answer:
$60 per ticket
Step-by-step explanation:
$215 is what it costs after the discount, so add the amount taken off, back on.
215+25
240
Then, divide by 4 to find the cost of each individual ticket.
240/4
60
8 per package.
64*2= 128
Now we need to divide 128 by 8 to see how many packages we will need.
128/8= 16
Now we know that we need 16 packages so that we can feed 64 people 2 dinner rolls.
Final answer: 16 packages
Ok... so this question can be solved by using simultaneous equations.
Use the general from of a parabola

you know the value of c, the y-intercept... y = -4
which means the equation is

now use the other 2 points to get 2 equations in 2 unknowns
(-2, -20) just substitute

this becomes

now the other equation using (4, -20)
The simplified form is