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The sum of 14 and twice a number y is equal to 78 ?

14 + 2y = 78

78 - 14 = 64

2y = 64

64 / 2 = 32

y = 32

Thanks

14+2y=78
-14 -14
__________
2y=64
_ _
2 2
y=32

a sales person drove 215 miles frpm new york to washington DC in 4.5 hours what is her average speed?

Dfrom point a to point b=215miles
VELOCITYaverage=change in distance/change in time
=215miles/4.5hrs
Approx.=47.8 or 48mph

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