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Sagot :
Answer:
The correct answer is:
- 30 = 10 + 3(h - 2)
30 = 10 + 3h - 6
26 = 3h
h = 8.67
Step-by-step explanation:
We're gonna calculate by our part the hours a new costumer can rent a bike and pay a total of $30, using the original function:
- f (h) = 10 + 3(h - 2)
Where:
- f (h) = Total cost.
- h = the number of hours.
We know The total money spent must be $30, by this reason, the function change to:
- 30 = 10 + 3(h - 2)
Now, we must clear the h variable, by this reason, we multiply 3 by h and 2:
- 30 = 10 + 3*h - 3*2
- 30 = 10 + 3h - 6
We pass the 10 and the -6 to the left side of the equality:
- 30 - 10 + 6 = 3h (Remember to change the signs when you do this step)
- 26 = 3h
Finally, we pass the 3 to the left side of the equality:
26 / 3 = h (the 3 pass to divide because is multiplying the x)
- 8.666666666667 = h
If we just use two decimals, the number of hours is:
- h = 8.67
How the third option is the one that shows this calculation and result, that is the correct answer.
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