The senior class is selling T-shirts for a fundraiser. The T-shirts were originally donated by an anonymous parent. The graph be
low shows the profit, in dollars, the senior class will earn based on the number of T-shirts sold.
Which of these best describes the profit per T-shirt the senior class makes from selling twenty T-shirts?
A. $2.00 per t-shirt
B. $1.00 per t-shirt
C. $0.50 per t-shirt
D. $0.25 per t-shirt
Which of these best describes the profit per T-shirt the senior class makes from selling twenty T-shirts?
A. $2.00 per t-shirt
B. $1.00 per t-shirt
C. $0.50 per t-shirt
D. $0.25 per t-shirt
1 answer:
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Answer:
4th option
Step-by-step explanation:
Given
-
← expand denominator using FOIL
= -
Since the denominators are common, then subtract the numerators
=
Answer:
Increasing on it's domain because the slope is positive.
The domain and range are both all real numbers, also known as
.
Step-by-step explanation:
All domain really means is what numbers can you plug in and you get number back from your function.
I should be able to plug in any number into 3x+2 and result in a number. There are no restrictions for x on 3x+2.
The domain is all real numbers.
In interval notation that is .
Now the range is the set of numbers that get hit by y=3x+2.
Well y=3x+2 is a linear function that is increasing. I know it is increasing because the slope is positive 3. I wrote out the positive part because that is the item you focus on in a linear equation to determine if is increasing or decreasing.
If slope is positive, then the line is increasing.
If slope is negative, then the line is decreasing.
So y=3x+2 hits all values of y because it is increasing forever. The range is all real numbers. In interval notation that is .