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3 years ago

Please help... #18 and #28

Mathematics

2 answers:

Vesna [10]3 years ago

5 0

I hope this helps you

KIM [24]3 years ago

3 0

18
$19 \geq \frac{x}{90} -25$
add 25 to both side
$44 \geq \frac{x}{90}$
times 90 to both sides
3960≥x

I just answerd 28
$\frac{x+5}{3} \leq 2$
times both sides by 3
x+5≤6
minus 5 both sides
x≤1

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Answer:

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Step-by-step explanation:

Card1: $85 - \frac{3.50}{30} x$

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x is number of days

$85 - \frac{3.50}{30} x = 75 - \frac{3}{30} x$

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Card2: $75 - \frac{3}{30} (600)$

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Answer:

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