0= x3 + 4x² - 9x-36
rational roots?

The highest common factor of 132 and 220

What is the number 321,000,000 in scientific notation? also what is the number? ?

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?