Answer:
$12
Step-by-step explanation:
assuming that the cost of delivery is constant irrespective of the number ordered
Let the cost of sandwich be x
First office
$33=4x+c where c is the cost of delivery
Second office
$61=8x+c
These two are simultaneous equation. Subtracting the equation of first office from the second office we obtain
4x=28
Therefore, x=28/4=7
The cost of delivery is 33-(4*7)=33-28=5
Therefore, one sandwich plus delivery costs 7+5=$12
Answer:
Combine like terms for the than you do to other side the multiply last for least you divide both sides
Step-by-step explanation:
The answer is b hope this helps
Answer:
(2,-9)
Step-by-step explanation:
Set the quadratic equal to zero.

Factor

Set each of these factors to zero

and


and

Plot the midpoint of the two values.

So the middle term is 2 and the other terms are 5 and -1.
Now the vertex is

So the vertex is
(2,-9)