Elaine spent 7/10 of her paycheck, and 5/9 of the money she spent was spent on groceries. What part of her paycheck was spent on groceries?

275$? i think

Step-by-step explanation:

I believe it's 1/3

Step-by-step explanation:

calculator

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

where's the diagram?

step-by-step explanation: