jenna found a pair of sneaker that cost $64.she has a 15% off coupon. how much will she pay for the sneakers? (without tax? )

The system of equations graphed below has how many solutions? y = 2x + 2

What statement is true? 2x^2-9x+2=-1

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?