Paul can clean a classroom floor in 3 hours. when his assistant him, the job takes 2 hours. how long would it take the assistant to do it alone?

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Mila's dog weighs 4 pounds more than 8 times the weight of keiko's dog. which expression could be used to fine te weight of mila's dog?

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 graph represents f(x)=[x]+3. what is f(-2.2)?