Divide 21a^3-14a by -7
a.-3a^3+2a
b.-3a^3-2a
c.-3a^2+2
d.3a^3+2a

For this case we must find the quotient of between -7:

That is to say:

We know that:

Finally:

Option A

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify