When building a house, the number of days required to build varies inversely with with the number of workers. One house was built in 20 days by 19 workers. How many days would it take to build a similar house with 38 workers?

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Find the zeros of each function. f(x) = 6x^2 - 7x - 20