What is the slope of this line?
2 answers:
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Answer: See below
Step-by-step explanation:
For this problem, we are given four functions, and their domains. All we have to do is figure out which equation we want to plug x into and solve.
f(-20)
For this first problem, we have x=-20. Then we can eliminate equations 1, 2, 4. We know equation 3 is the correct one because it says x<-12. -20 is less than -12. Therefore we plug in x=-20 to the third equation.
f(-20)=3(-20)-7 [multiply]
f(-20)=-60-7 [subtract]
f(-20)=-67
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f(0)
For this problem, we have x=0. Then we can eliminate equations 1, 2, 3. We know equation 4 is the correct one because it says x∈{-15, -12, 0, 10}. This means x has to be either one of the four numbers listed in the parentheses. We see that x=0 is in there. Therefore we plug in x=0 to the fourth equation.
f(0)=11-|-0-1| [subtract]
f(0)=11-|-1| [absolute value]
f(0)=11-1 [subtract]
f(0)=10
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f(15)
For this problem, we have x=15. Then we can eliminate equations 2, 3, 4. We know equation 1 is the correct one because it says x>10. This means x has to be greater than 10. 15 is greater than 10. Therefore we plug in x=15 to the first equation.
[add]
[absolute value]
[subtract]
So far, Jackie has read 217 pages
In order to determine the total number of pages Jackie read, we would have to determine the number of pages she read each day and add these pages together
- Number of pages she read on Monday =
x 252 = 126 pages
- Number of pages she read on Tuesday = 28 pages
- Number of pages she read on Wednesday =
x 252 = 63 pages
The total number of pages she has read so far = 126 + 28 + 63 = 217 pages
A similar question was solved here: brainly.com/question/24708342?referrer=searchResults