Answer:
f(x) is the total cost and x is the number of peaches.
Step-by-step explanation:
We know that each peach costs $0.75. This means the expression 0.75x represents the total cost of peaches; this makes x represent the number of peaches.
We also know that $2.25 is the cost of juice. Adding it to the cost of peaches gives us the total cost; this means f(x) represents the total cost.
The slope is 1
The slope always is the coefficient of the variable, x, when an equation is in slope intercept form
Answer:
X=4
Step-by-step explanation:
2(2x-4)+4=12
4x-8+4=12
4x-4=12
4x-4+4=12+4
4x=16
x=4
For this case we have a quadratic equation of the form:

What we must keep in mind to know which direction opens the parabola, is the value of a.
We have two options:
If a <0 the parabola opens down
If a> 0 the parabola opens up
We have the following equation:

We observed that:

Therefore, the parable opens up.
Answer:
the direction that this parabola opens is:
Upwards