PLEASE HELP! PRE ALGEBRA QUESTION- 12 MINS LEFT MATH !!!!!!?

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Fashiongirl

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A car travels at 20 meters per second.

What is its rate in kilometers per hour?
72 kilometers per hour
5.6 kilometers per hour
1.2 kilometers per hour
56 kilometers per hour
ALSO THIS ONE:

Sam wants to leave an 18% tip for his dinner. The bill is for $23.50.

Which equation could be used to find the total amount that Sam should pay?
23.5 = 0.18x
x = (0.18)(23.5)
x = (23.5)(1.18)
1.18 = 23.5x
plz dont say do ur own hw
 
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