Large trucks have 18 wheels. vans have 4 wheels. miguel sat at the window at the truck stop and counted 84 vehicles in the parking lot. he figured out that there were 1,343 wheels. how many trucks and vans were in the parking lot?

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The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? 0.62 0.78 0.84 0.96