*muffled crying*

.

-8 is the answer.

Step-by-step explanation:

3 - (-8) = 11

The negatives cancel to become a +

3 + 8 = 11

Think of 3 positive things and 8 negative things.

O O O  

O O O O O O O O

3 of the positive things will add onto the 8 positive things, resulting in 11  

#teamtrees #WAP (Water And Plant)

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: