The zeros of a parabola are -5 and -3. the point (0, 60) is on the graph as represented by the equation.

60=a(0+5)(0+3)

what is the value of a?

−7.5
−4
4
7.5

Is a positive integer raised to a negative power always positive

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?

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?