Answer:
10
Step-by-step explanation:
Statements A and C are true
Answer:

And for the coordinate on y we can use the function like this:

Then the vertex would be 
Step-by-step explanation:
For this problem we have the following function given:

That represent a quadratic function and the general form is given by:

For this problem a =-1 , b= 50 , c=-456 and we can find the corrdinate of the vertex in x with this formula:

And replacing we got:

And for the coordinate on y we can use the function like this:

Then the vertex would be 
2x+2x+x+30+x+30=y
6x+60=y
(6x+60)+(-60)=y+(-60)
6x=y-60
6x/6=y-60/6
x=y-60/6
Answer:
Cheyenne has a part-time job at which she gets paid by the hour. The table below shows how much money Cheyenne can earn for working variousCheyenne has a part-time job at which she gets paid by the hour. The table below shows how much money Cheyenne can earn for working various
Step-by-step explanation: