The floor makes up 40% of the lateral surface area of the tent. What is the value of x?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Using elimination, what is -4x+2y=-12 4x+8y=-24