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3 years ago

I need help on number 18

Mathematics

2 answers:

vladimir2022 [97]3 years ago

6 0

Answer:

Plan C

Step-by-step explanation:

Complete the table first:

To find the number of weeks for each amount of $ to save, divide $500 by the amount.

Plan B: $500/$30 = 16.7 weeks, rounded to 17 weeks

Plan C: $500/$40 = 12.5 weeks, rounded to 13 weeks

Plan D: $500/$50 = 10 weeks

Save $500 in less than 16 weeks with $20 extra:

Which plans need less than 16 weeks?

Plans C and D.

Check the amount of money Plan C gives:

In 13 weeks, how much extra money does this plan give?

Extra money = Total - $500

The total money is 13 weeks * $40 = $520

$520 - $500 = $20 in extra money

Therefore Plan C gives Todd $500 in less than 16 weeks, with $20 extra.

brilliants [131]3 years ago

4 0

The answer is Plan C

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Answer:

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Step-by-step explanation:

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If a line passing through two points then the equation of line is

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$3y+9=5x-35$

$-5x+3y+9+35=0$

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Slope of the line : $m=\dfrac{-\text{Coefficient of x}}{\text{Coefficient of y}}=\dfrac{-2}{1}=-2$

Slope of parallel lines are equal. So, the slope of required line is -2 and it passes through the point (0,2).

Equation of line is

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$y-2=-2x$

$2x+y-2=0$

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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