Answer:
Vertical line
Step-by-step explanation:
A is the answer because I did befor
18. A line perpendicular to the x-axis is a vertical line.
The equation of a vertical line is
x = k,
where k is the x-coordinate of every point on the line.
Since this vertical line goes through point (-10, 0.5), and this point has x-coordinate -10, then every point on the line has x-coordinate -10.
The equation is
x = -10
19.

To find f(9), just replace x with 9 and evaluate the expression.




20.




From 170 to 97, there's a difference of 73.
so hmm if we take 170 to be the 100%, what is 73 in percentage off of it?
The given condition is an arithmetic sequence with the first term (a1) is 1 penny and the common difference (d) is 1 penny. A year that is not a leap year has 365 days (n). The arithmetic series (S) is calculated through formula,
S = (n/2) (2a1 + (n - 1) x d)
Substituting the known values,
S = (365/2) (2 x 1 + (365 - 1) x 1)
S = 66795 pennies
A dollar is 100 pennies. Therefore, at the end of the year, the total savings is $667.95.