I’m guessing you mean he saves 15%?
He saves $975
Spends: $5525
Consider the arithmetic series 
Let t=1 in the given series, we get
first term =
= 3-4 = -1.
Let t=2 in the given series, we get
second term =
= 
Let t=3 in the given series, we get
third term = 
Now, let t=18 in the given series, we get
last term = l = 
We get the series as
-1, 2, 5,..... 50
Sum = 
= 
= 
= 441
Therefore, the sum of the given arithmetic series is 441.
(88sin20)(t - 16t²) = 0
(8(0.3090169944)(t - 16t²) = 0
(2.472135955)(t - 16t²) = 0
2.472135955t - 39.55417528t² = 0
Therefore, the first number in an ordered pair is a value for x, and the second number is a value for y. These numbers are called the x- and y-coordinates.
The Z-37 lies between the 2 and 3 standard deviations of the mean. Then the correct option is C.
<h3>What is normal a distribution?</h3>
It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.
The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.
A supervisor finds the mean number of miles that the employees in a department live from work.
μ = 29 and σ = 3.6
Z-37
Then we have

Then Z-37 lies between the 2 and 3 standard deviations of the mean. Then the correct option is C.
More about the normal distribution link is given below.
brainly.com/question/12421652