Mikoto graphed (shown below) the relationship between the temperature ((left parenthesisin ^{\circ}\text{c}) ∘ c)degrees, start text, c, end text, right parenthesis and her cat's change in weight ((left parenthesisin \text{g})g)start text, g, end text, right parenthesis over the last 101010 days. what is the meaning of point aaa?

step-by-step explanation:

compare

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

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be