For a field trip, a bus company charges $100 plus a fee per student. The total cost is $350.00 for 70 students. Which equation models the total cost, y, of the field trip for x number of students?

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: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer

total of apples - take away four

6-4 = 2

answer is 2 apples