The answer is If you would like to find the expression that is equivalent to (t*s)(x), you can calculate this using the following steps:
s(x) = x - 7
t(x) = 4x^2 - x + 3
(t*s)(x) = t(s(x)) = t(x - 7) = <span>4(x - 7)^2 - (x - 7) + 3 = 4(x - 7)^2 - x + 7 + 3
The correct result would be </span>4(x – 7)2 – (x – 7) + 3.
Kalon + Marna = 12/7 hours working together
( I attached two formulas. Use formula 3)
Worker 2 Time = (worker 1 Time) * Total Time / [(worker 1 Time) - Total Time]
Worker 2 Time = ((4) * 12/7) / [4 - 12/7]
Worker 2 Time =
<span>
<span>
<span>
6.8571428571
</span>
</span>
</span>
/
<span>
<span>
<span>
2.2857142857
</span>
</span>
</span>
Worker 2 Time =
<span>
</span>3 hours
<u>|Vertices </u><em><u>ABCD</u></em><u>| (x - 3, y + 5) |Vertices </u><em><u>A'B'C'D'|</u></em>
| (-4, 1) | (-4 - 3, 1 + 5)| (-7, 6) |
| (1, 3) | (1 - 3, 3 + 5) | (-2, 8) |
| (2, 0) | (2 - 3, 0 + 5) | (-1, 5) |
<u>| (-3, -2) |(-3 - 3, -2 + 5)| (-6, 3) |</u>
The vertices of (-4, 1), (1, 3), (2, 0), and (-3, -2) is (-7, 6), (-2, 8), (-1, 5), and (-6, 3).
The answer is D.