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Penny worked 8 hour and earned $70. What is her hourly rate?

Answer 1

Genesis Amaya

Penny's hourly rate of pay is $8.75/hour.

Her hourly rate of pay is determined by dividing her total pay by the number of hours she worked.

Using #r# as her rate of pay, #r=("total pay")/("total hours")#

#r=($70.00)/("8 hours")="$8.75/hour"#

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Answer 2

Roman Alvarez

#$8.75#

Hourly rate means: how much is earned in 1 hour which is #("earnings")/("1 hour")#

This would normally be seen as dollars per hour #->("dollars")/("hours")=$/h#

We can use #$/h# as a ratio to find our solution:

#$/h->($70)/(8" hours") larr" given initial condition"#

So as we need 1 hour we need to change the 8 into 1.

To maintain proportionality in ratio what we do to the bottom we do to the top (for multiply and divide).

#$/h->($70)/(8" hours")-=(70-:8)/(8-:8) = 8.75/1#

So for 1 hour (the unit) Penny earned $8.75 (unit rate)

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Answer 3

Jeremiah Andrews

To find Penny's hourly rate, divide her total earnings ($70) by the number of hours she worked (8).

$70 ÷ 8 hours =$ 8.75 per hour

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.