al Times New ... ▾ 12- BIU A- A Y E 138 7. If you get 2 imaginary answers when using the quadratic formula, how does this relate to how many times (0, 1 or 2) a quadratic graph touches/crosses the x-axis? 8. Your teacher recently found an old Nintendo in a thrift store. Use the formula to predict the value of the Nintendo in 2020? (Remember, x is the years after 1986, and y is the value, in $.) Do you think this is a realistic prediction of the value of that Nintendo? Now finding f(0) to find f(0), subsitute x=0 into the function: f(0)=3(0)^2-40(0)+180 f(0)=0-0+180 f(0)=180 the value of f(0) is 180, which means that in the year 1986 when x=0 the nintendo video game was worth $180. The formula f(x)=3x2-40x+180 is in standard form of a quadratic formula. the standard form of a quadratic formula is given as ax2+bx+c in this forumla, a=3,b=-40, and c=180, which matches the standard form.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
solve for 7 pls!
al
Times New...
12 -
SA
BIUA . A
7. If you get 2 imaginary answers when using the quadratic formula, how does this relate to
how many times (0, 1 or 2) a quadratic graph touches/crosses the x-axis?
Now finding f(0) to find f(0), subsitute x=0 into the function:
f(0)=3(0)^2-40(0)+180
8. Your teacher recently found an old Nintendo in a thrift store. Use the formula to predict
the value of the Nintendo in 2020? (Remember, x is the years after 1986, and y is the
value, in $.) Do you think this is a realistic prediction of the value of that Nintendo?
%
f(0)=0-0+180
f(0)=180
the value of f(0) is 180, which means that in the year 1986 when x=0 the nintendo video game
was worth $180.
The formula f(x)=3x2-40x+180 is in standard form of a quadratic formula. the standard form of a
quadratic formula is given as ax2+bx+c
in this forumla, a=3,b=-40, and c=180, which matches the standard form.
<
88
N
O
8
Transcribed Image Text:al Times New... 12 - SA BIUA . A 7. If you get 2 imaginary answers when using the quadratic formula, how does this relate to how many times (0, 1 or 2) a quadratic graph touches/crosses the x-axis? Now finding f(0) to find f(0), subsitute x=0 into the function: f(0)=3(0)^2-40(0)+180 8. Your teacher recently found an old Nintendo in a thrift store. Use the formula to predict the value of the Nintendo in 2020? (Remember, x is the years after 1986, and y is the value, in $.) Do you think this is a realistic prediction of the value of that Nintendo? % f(0)=0-0+180 f(0)=180 the value of f(0) is 180, which means that in the year 1986 when x=0 the nintendo video game was worth $180. The formula f(x)=3x2-40x+180 is in standard form of a quadratic formula. the standard form of a quadratic formula is given as ax2+bx+c in this forumla, a=3,b=-40, and c=180, which matches the standard form. < 88 N O 8
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