Carlos' monthly office budget is $250. He needs to buy ink cartridges, which cost $40 a piece. he will save at least $50 of his budget for reams of paper. what is the range of ink cartridges he can buy and still have enough money left over for reams of paper?

answer:

c 60% on edg

sites:

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