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I believe the answer is:
30x + 80y - 15z. The question tells us that she earns 30 points for each fish, and since we do not know how many, we just write 30x, then we add 80 points for each octopus, so that's + 80y, and then subtract 15 points for each time she captures a crab, so - 15z.
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-Belle
<h3>Answer: C) 180 or 0</h3>
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Work Shown:
Let y = sin(x). Solve for y then solve for x
-4+6*sin(x) = -4+4*sin(x)
-4+6*y = -4+4*y ... replace sin(x) with y
6y-4y = -4+4
2y = 0
y = 0/2
y = 0
sin(x) = 0 ... plug in y = sin(x)
x = arcsin(0) or x = 180-arcsin(0)
x = 0 or x = 180
We have two solutions here since
sin(0) = 0 and sin(180) = 0
The solutions x = 0 and x = 180 fit in the interval 
Answer:
B. 40
Step-by-step explanation:
She starts with 46 and sells half of them
That leaves her with 23 stamps left.
She then buys 17 more, 23 + 17 is 40
Answer is B
Lines<span> that are </span>vertical<span> have no </span>slope<span> (it </span>does not exist<span>). </span>Vertical lines<span> have "rise", but no "run". The rise/run formula for </span>slope<span> always has a zero denominator and is undefined. The equations for these </span>lines describe<span> what is happening to the x-coordinates.</span>
