4x - y = -26
-2x + 3y = 13

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles