Astack of sheets of tissue paper is about 2.5 inches high. each sheet is about 0.01 inch thick. how many sheets are in the stack? show your work.

Hi my sisters and brothers can tell me the answer because i don’t understand the question

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?

Solve the equation by completing the square. x^2+2x=17