Answer:
D. Up
Step-by-step explanation:
When a parabola has the form
, It is vertical (opens up or down).
Because the variable "x" is squared.
If "a" is positive, then the parabola opens up, but if it is negative, then the parabola opens down.
In this case you have the quadratic function:

Which can be rewritten as:
Therefore, it is vertical, because it has the form: 
You can observe that the value of "a" is:

Then, since "a" is positive, the parabola opens up.
A number line is a horizontal line with calibrated interval marks like the one shown in the attached picture. The number line has calibrated marks with an interval of 1 inch. To represent this in a number line, just mark the 10-inch and 15-inch mark.
Answer:
245+45x=170+60x
therefore in 5 days, they will charge the same amount
Answer:
38/ all u have to do is divide 2,318 and 61