You walk 3 miles from your house to the store. at the store you meet up with a friend and walk with her 1 mile back towards your house. how far are you from your house now?

2 miles from your house

Step-by-step explanation:

you walked 3 miles to the store so you are now 3 miles away.

you meet a friend and walk 1 mile in the direction of your house.

now there is 2 miles left.

3 - 1 = 2

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