One state leads the country in tart cherry production, producing 70 out of every 100 tart cherries each year.

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?