A motorboat travels 217 miles in 7 hours going upstream. It travels 413 miles going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

What is the absolute value of -100000000000000?