Jessie will pack a suitcase with books. The total weight of the suitcase and books can be no more than 50 pounds. The empty suitcase welghs 5.7 pounds. Each book weighs 2.4 pounds.
What is the greatest number of books that Jessie can pack in the suitcase?

the answer is 28

step-by-step explanation:

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

the correct answer is the second option

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

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