Which is the approximate mass of a button?

a.
1 liter

b.
1 meter

c.
1 kilogram

d.
1 gram

Find the area of an equilateral triangle with a side of 6 inches

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Can someone, me with this.i really need with this