A dozen eggs cost 4.25 at the farmstand approximately how much does each a cost round to the nearest penny

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

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