The total cost is the dependant variable and the number of tickets along with flat out price is the independent variable.
The equation would be y = 1.25x + ?
You would insert 25 for x which equals 31.25 and insert 43.75 for y.
43.75 = 31.25 + ? Then subtract 31.25 from both sides of the equation and you would get....
12.5 = ?
That is your flat rate to get in to the fair
Answer:
no
Step-by-step explanation:
Answer:
86
Step-by-step explanation:
First one;
![f(x) = {x}^{2} - 3x - 28](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%7Bx%7D%5E%7B2%7D%20%20-%203x%20-%2028)
As it factorises to:
f(x) = (x - 7)(x + 4)
Which, if set equal to 0, will solve to give the desired solutions like so:
f(x) = (x - 7)(x + 4) = 0
x - 7 = 0 x + 4 = 0
x = 7 x = -4
None of the other quadratics solve to give desired solutions when set equal to 0.