You know that you must buy a calculator. The calculator you need costs $27.95 including tax. You also need some binders. Each binder costs $12.55 including tax. If you buy only the calculator and binders, write an inequality that you could use to determine how many binders you could buy.

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

What is negative 3/9 times negative 2/8 ?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?