A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon
1 answer:
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Answer:
$100.25
Step-by-step explanation:
To figure this out we can write a really simple equation! to start we're going to identify our variables: in this case we'll make for total,
for the amount of copper,
for the amount of aluminum, and
for the amount of plastic. We can then create this equation to represent the sum of the amount of material times the value. This equation will look like this:
Now that we have an equation written out, we can plug in the amount of each material to get . We can then simplify this by following PEDMAS and multiplying to get
and then all we have left is to add to get
Answer:
y = 2sin(x/2 - pi/4) + 1
Step-by-step explanation:
The normal sine has a range of [-1, 1]. This one has a range of [-1, 3], so the amplitude is 2 times higher (4 vs 2).
After that, 2sin(x) has a range of [-2, 2], but this one has a range of [-1, 3], so we need to shift it upwards by 1.
We now know that the answer is 2sin(____)+1.
A normal sine has it's middle point while rising at x = 0, but this one has it at x = pi/2 - so we need to shift a sine to the right by pi/2.
Lastly, a sine has a cycle of length 2pi, but this one has a cycle of length 4pi. We can achieve that by dividing the argument 2.
We now know that the answer is 2sin(x/2 - pi/4) + 1. We can plot it to verify.
