Which of the following numbers is between -3/4 and 5/8 ?

-1
-.5
7/8
0.9

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?