9514 1404 393
Answer:
659
Step-by-step explanation:
We assume the daily rate increases at each multiple of $50. When the balance reaches $50 on day 25, the pay on day 26 is $2.25.
Similarly, when the balance reaches 9628.75 on day 658, the pay will be $50 on day 659.
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I found this easiest to solve using a computer program. A spreadsheet can do it by computing the number of days between raises. This is shown in the attachment.
<1 = 72
<2 = 156
<3 = 24
<4 = 112
<5 = 44
<6 = 136
Let's find the slope considering the points (9 , 7) and (6 , 15)
1) Formula: area = height * base / 2
2) Call x the height:
height = x
base = 2x
3) State the equation:
(x)(2x) = 49 in^2
4) Solve the equation:
2x^2 = 49 in^s
x^2 = (49/2) in^2
x = √(49/2) in
x = 7√2 / 2 in = 3.5 √2 in
5) Solution:
height = 3.5 √2 in and base = 7√2 in
6) Verification: area = (7√2 in) (3.5√2 in) = 49 in^2
Answer: height = 3.5√2 in and base = 7√2 in.
The graph shows the solution of your equations is
.. (x, y) = (-6 2/3, -9 2/3)
The closest point to that of the choices offered is (-5, -7.2).
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The offered "approximations" are not very good approximations.
