Question 820960
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f(x) = 0.156x^2 - 2.02x + 10.2
x = year - 1990
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year = 1993
x = 1993 - 1990
x = 3
f(3) = 0.156(9) - 2.02(3) + 10.2
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answer 1:
f(3) = 5.544%
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f(x) = 0.156x^2 - 2.02x + 10.2 = 0
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the above quadratic equation is in standard form, with a=0.156, b=-2.02, and c=10.2
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to solve the quadratic equation, by using the quadratic formula, copy and paste this:
0.156 -2.02 10.2
into this solver: https://sooeet.com/math/quadratic-equation-solver.php
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the quadratic vertex is a minimum at: ( x= 6.47435897, f(x)= 3.66089744 )
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x= 6.47435897
6.47435897 = year - 1990
year = 6.47435897 + 1990
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answer 2:
year = 1996
tuition increased by 3.7% in 1996
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