3 years ago

An 11 pound turkey cost $15.00 while the 16 pound turkey is on sale for $20.00 How much would you save with the sale price

1 answer:

7 0

$15.00/11 pounds = $1.3636 per pound$20.00/16 pounds = $1.25 per pound 1.363636 - 1.25 = $0.113636 per pound, less 1.363636 × 20 = $27.27 original price for 20lb

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F(x)= 9-x^2, x ≥ 0. f^-1(x)=??

julia-pushkina [17]

$y=9-x^{2},\ x\ge0$

Reverse $x$ and $y$ :
$x=9-y^{2},\ y\ge0$
Solve for $y$ :
$x=9-y^{2}$
$\rightarrow y^{2}=9-x$
$\rightarrow y=\sqrt{9-x}$ since $y\ge0$