How many real number solution does the equation x^3 + 5x^2 + 3x - 9= 0 have

3 real solutions.

Step-by-step explanation:

Try  x = 1 :

f(1) = 1 + 5 + 3 - 9 = 0

so x = 1  is  a solution.

So x - 1 is a factor of the function.

If we divide the function by x - 1 we get the quotient  x^2 + 6x + 9 which is

(x + 3)^2.

So there are 2 more roots of -3.

b.-4 units

all you   do is count how many times you move

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,