Answer:
d. 
Step-by-step explanation:
![\displaystyle [3 + i]^2 = [3 + i][3 + i] = 9 + 6i + i^2 → 9 + 6i - 1 → 6i + 8](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5B3%20%2B%20i%5D%5E2%20%3D%20%5B3%20%2B%20i%5D%5B3%20%2B%20i%5D%20%3D%209%20%2B%206i%20%2B%20i%5E2%20%E2%86%92%209%20%2B%206i%20-%201%20%E2%86%92%206i%20%2B%208)
Therefore, the d-value is 6.
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![\displaystyle \sqrt{-1} = i \\ -1 = i^2 \\ -i = i^3 \\ 1 = i^4\:[every\:multiple\:of\:4]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csqrt%7B-1%7D%20%3D%20i%20%5C%5C%20-1%20%3D%20i%5E2%20%5C%5C%20-i%20%3D%20i%5E3%20%5C%5C%201%20%3D%20i%5E4%5C%3A%5Bevery%5C%3Amultiple%5C%3Aof%5C%3A4%5D)
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Answer:
u = 2
Step-by-step explanation:
13 = 11+u
Subtract 11 from each side
13-11 = 11+u-11
2 = u
<h3>
Answer: (0, -1)</h3>
Look where the graph crosses the vertical y axis. This point is the y intercept.
In this case, the y intercept is located at (0, -1)
You start at the origin (0,0) and move down 1 unit to get to (0, -1)
Side note: The equation of this line is y = 2x-1
Answer:
$6
Step-by-step explanation:
We have: The cost of a taxi ride is represented by the function c(m)=2m+4
Plug 1 mile into "m" of the function c(m)=2m+4
So, we have c (1) = 2 ˣ 1 + 4 = 6
Thus, The cost per mile of the cab is $6.
Answer:
4 friends, 40$, so each had 10$
40/4=10-7.5= 2.5
Each had $2.50 left