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f(x)=bsqrt(a-x)+7sqrt(a-x)
For the function
f,a and
b are constants and
f(16)=0. If
f(9) > 0, which of the following could be the value of
a+b ?
A) -3
B) 7
C) 9
D) 15

$f(x)=b \sqrt{a-x}+7 \sqrt{a-x}$ $\newline$ For the function $f, a$ and $b$ are constants and $f(16)=0$ . If f(9)>0 , which of the following could be the value of $a+b$ ? $\newline$ A) $-3$ $\newline$ B) $7$ $\newline$ C) $9$ $\newline$ D) $15$

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Precalculus

Simplify radical expressions with variables

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f(x)=ba−x+7a−xf(x)=b \sqrt{a-x}+7 \sqrt{a-x}f(x)=ba−x​+7a−x​\newlineFor the function f,a f, a f,a and b b b are constants and f(16)=0 f(16)=0 f(16)=0. If f(9)>0 , which of the following could be the value of a+b a+b a+b ?\newlineA) −3-3−3\newlineB) 777\newlineC) 999\newlineD) 151515

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