Zoom in if you can’t see and please if you have to tell me something say it int comments were it have (•••) please help I don’t have enough time no lying too (20 points! )

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

Use sigma notation to represent the following series for 9 terms.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122