MEDAL!!!
On a road trip, Maura drove at a speed of 60 miles per hour for the first two hours. She then increased her speed by 25%.
If Maura continues to drive at her increased speed, write an equation to find the total distance, d, in miles, that Maura will have travelled for any time, x, is hours, longer than 2 hours.
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OpenStudy (calculusxy):
@perl @Nnesha
OpenStudy (calculusxy):
@amistre64
OpenStudy (perl):
i would first find the distance covered in the first two hours
OpenStudy (perl):
get that out of the way
OpenStudy (calculusxy):
So isn't the distance for the first hour as 120 miles (60 x 2)?
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OpenStudy (calculusxy):
*first two hours
@perl
OpenStudy (perl):
correct
OpenStudy (calculusxy):
And then?
OpenStudy (perl):
now we want to use
$$ \bf distance = rate * time$$
OpenStudy (calculusxy):
distance is d and time is x. what would be the rate?
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OpenStudy (calculusxy):
75?
OpenStudy (anonymous):
ya 75
OpenStudy (perl):
correct
OpenStudy (calculusxy):
okay so the answer is:
d= 75x
?
OpenStudy (perl):
and you need the initial 120 miles
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