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3 years ago

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Rob is saving to buy a new MP3 player. For every $15 he earns babysitting, he saves $9. On Saturday, Rob earned $60 babysitting.

How much money did he save? If he earned $60, how much did he earn

1 answer:

alexandr402 [8]3 years ago

8 0

$60 ÷ $15 = 4
$9 × 4 = $36
he saved $36 when he earned $60

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The z value is calculated as before:

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We prefer the option of 30 trials for this game.

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