Audubon preschool has 154 children In one age group. One seventh of those children arrive for early morning drop off. How many children arrive for early morning drop off.

Jason can mow his parents' yard in 3 hr. His brother can mow it in 4 hr. How long would it take them, working together, to mow the yard? (Assume two mowers are available.)

Is the number 3.1x10^-5 written in scientific notation? Why or why not?

87.05 multiplied by 1.6

In a deck of 52 playing cards, there are 13 different cards in the deck that are hearts. What is the probability that if you cut the deck, you'll get a heart?

A coordless phone costs $55 plus $25 for each extra handset. what is the cost of a coordless phone and 3 extra handsets

Amy got a $1,000 loan from her bank, and she had to repay $1,550. What are the principal and interest amounts in this transaction?

What is 8/9 as a decimal rounded to nearest thousandth

What is the mean cost of replacing brake pads for four different vehicles ai at the following prices $120,$235,$98,$142

If f (x) = 1/2 [x], what is f (7.6) •3 •3.5 •3.8 •4

8 people are about to board a plane. In how many ways can this be done?