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2 years ago

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Beth has 250 comic books in her collection. She begins to sell 20 of them each week. Martin has 80 comic books in his collection

. He begins buying 15 new comic books each week.

1 answer:

Nuetrik [128]2 years ago

6 0

Well, after doing all that math, here is what I came up with, I hope this helps! :) -1600x^2+28265x-21830

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You have a credit card with a balance of $754.43 at a 13.6% APR. You have $300.00 available each month to save or pay down your

pochemuha

<span>B(n) = A(1 + i)^n - (P/i)[(1 + i)^n - 1]

where B is the balance after n payments are made, i is the monthly interest rate, P is the monthly payment and A is the initial amount of loan.

We require B(n) = 0...i.e. balance of 0 after n months.

so, 0 = A(1 + i)^n - (P/i)[(1 + i)^n - 1]

Then, with some algebraic juggling we get:

n = -[log(1 - (Ai/P)]/log(1 + i)

Now, payment is at the beginning of the month, so A = $754.43 - $150 => $604.43

Also, i = (13.6/100)/12 => 0.136/12 per month

i.e. n = -[log(1 - (604.43)(0.136/12)/150)]/log(1 + 0.136/12)

so, n = 4.15 months...i.e. 4 payments + remainder

b) Now we have A = $754.43 - $300 = $454.43 so,

n = -[log(1 - (454.43)(0.136/12)/300)]/log(1 + 0.136/12)

so, n = 1.54 months...i.e. 1 payment + remainder
</span>

8 0

2 years ago

here is a list of numbers: 12, 13, 19, 16 ,32, 15, 13.a)work out the range of the numbers in the list.b)work out the mean of the

ratelena [41]

Answer: Mean: 17.14 Range: 20.

Step-by-step explanation: 12+13+13+15+16+19+32 25+13+15+16+19+32 38+15+16+19+32 53+16+19+32 69+19+32 88+32 120/7 17.14

32-12 20

6 0

2 years ago

How do I explain the steps to the question involving the pie?

jok3333 [9.3K]

Answer:

Area = pi x radius squared

the radius is 2.39 so that's squared that is 5.7121pi

Step-by-step explanation:

4 0

2 years ago

X -5 -4 -3 -2 -1 0 1 2 3 f(x) -11 -3 5 13 21 29 37 45 53 (a) Determine the difference of outputs of any two inputs that are 1 un

alex41 [277]

A) I use x=-5; f(x)=-11 and x=-4; f(x)=-3. We get the range = -3-(-11)=8b)I use x=-5; f(x)=-11 and x=-3; f(x)=5. We get the range = 5-(-11)=16c)I use x=-5; f(x)=-11 and x=-2; f(x)=13. We get the range = 13-(-11)=24d) Range of input is equal with the ratios of the output. You can find the pattern of output above 8,16,and 24 can divided by 8 and give the result 1,2 and 3
Is that good for you?
Good Luck!
<3

5 0

2 years ago

If you knew that f(-4)=8, then what (x,y) coordinate point must lie on the graph of y=f(x?)

nika2105 [10]

Answer:

(-4,8)

Step-by-step explanation:

so f(-4)=8 this is easy

the -4 is the x

beause f(x)=y

so the 8 is the y

when y is f(-4)=8 then the cordinate points are (-4,8)

7 0

2 years ago