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Mathematics 9 Online
OpenStudy (calculusxy):

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.

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)?

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?

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

OpenStudy (calculusxy):

120 + 75x = d

OpenStudy (calculusxy):

Thank you !!

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