3 years ago

Please help! i-ready lesson!

Mathematics

2 answers:

cestrela7 [59]3 years ago

7 0

Answer: whahhhhh????????

Step-by-step explanation:

You talkin’ ‘bout yo

denis-greek [22]3 years ago

5 0

Is there supposed to be a picture?

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Which expression is equivalent to 8-(6r+2)

masha68 [24]

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A- -6r+6

Step-by-step explanation:

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4 years ago

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A gift shop sells 140 wind chimes per month at $90 each. The owners estimate that for each $5 increase in price, they will sell

guapka [62]

Answer: $95

Step-by-step explanation:

Te new price will be 90 + 5x, if the price increases "x" times

The number of wind chimes sold per month will become 140 - 7x

$\begin{aligned}&\text {Revenue, } \mathrm{R}(\mathrm{x})=(90+5 \mathrm{x})(140-7 \mathrm{x}) \\&R^{\prime}(x)=5(140-7 x)-7(90+5 x) \\&R^{\prime}(x)=700-35 x-630-35 x \\&R^{\prime}(x)=70-70 x=0 \\&70 x=70 \\&x=1\end{aligned}$

Therefore, if the price becomes (90 + 5(1)) = $95 per wind chime, then the revenue will be maximum

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