The telephone company offers two billing plans for local calls. Plan 1 charges ?$29 per month for unlimited calls and plan 2 charges ?$16 per month plus 5 cents per call. Use an inequality to find the number of monthly calls for which plan 1 is more economical than plan 2.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. david estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.