Jane is making reusable grocery bags and lunch bags she needs 3/4 yard of material to make a grocery bag a lunch bag needs 2/3 of the amount of material agrocery bag needs how much material does she need to make a lunch bag

i got 10.28 but that rounds up to 10.3

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