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Brut [27]
3 years ago
7

Victoria wants to earn an average grade of at least 80 on her four Algebra tests. So far she has taken 3 tests and earned grades

of 54, 89 and 100. _____ is the minimum score that she needs to earn on the fourth test to get an overall average score of 80.
Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0
73 is the minuim score.
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If f(x) and its inverse function, f Superscript negative 1 Baseline (x), are both plotted on the same coordinate plane, where is
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Answer:

(2,2)

Step-by-step explanation:

step 1

Find the equation of f(x)

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m=(0-6)/(3-0)=-2

The function f(x) in slope intercept form is equal to

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step 2

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step 3

Solve the system of equations

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f^{-1}(x)=-0.5x+3

equate both functions

-0.5x+3=-2x+6

solve for x

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Answer: Philips age is 20. Bryans age is 15

Step-by-step explanation:

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