Answer: The first day the author reaches 100 days is on day 16.
To solve this problem, you could use a graphing calculator to graph the given equation. Then, determine when this line crosses 100. It crosses when x = 15.539. Therefore, we would have to round up to 16 so it is at least 100.
You could use the quadratic equation to solve: 100 = x^2 -12x + 45
Either you will get 16. If you use the quadratic formula, make sure to only use the positive answer.
Answer:

Step-by-step explanation:
Slope is negative reciprocal when two lines are perpendicular
m1=1/2 therefore m2=-2
The equation of the line in point-slope form is given as

Here m=-2 and (x1, y1)=(-3, -1)
Therefore,

Answer:
B. False
Step-by-step explanation:
<u>For f(x) to be a function, only one x-value can be assigned to a y-value. The x-values cannot repeat, which in this case, they do (such as 6 and 12), meaning f(x) is </u><u>not</u><u> a function.</u>
There are no expressions to choose from, but it should look something like:
y= total cost= $74.50
x= number ordered= 10
c= cost per lunch= 74.50/10= $7.45
The more lunches that are ordered, the higher the total will go. y depends on what x is.
y= $7.45x
OR
$74.50= 10c
CHECK:
$74.50= $7.45 per lunch * 10 lunches
$74.50= $74.50
ANSWER: y= $7.45x OR $74.50= 10c
Hope this helps! :)