Elena went a store were you scoop your own popcorn and buy as much as you want. She bought 4oz of spice pop corn for 1dollar how much does pop corn cost per dollar

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?

Ten times the square of a non-zero number is eqaul to ninety times the number