A bookstore had 45 copies of a magazine. Yesterday, it sold 2/3 of them. Today, it sold 4/5 of what remained. How many copies does the bookstore have left

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

What signals you that factoring by grouping is the best method to use when factoring a problem?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?