Eric bought a new computer and printer online. He had to pay 10% in shipping fees. The items totaled $2,000. How much did the shipping cost?

$200

Step-by-step explanation:

To solve this problem, we need to figure out what 10% of $2,000 is. To do that, we simply multiply $2,000 by 10%. Don't forget to change 10% to its decimal form (10% -> 0.10). The work is shown below:

($2,000)(0.10) = $200

This means that the shipping for the computer and printer costed Eric $200.

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

first one because it can't have a fraction in it

step-by-step explanation: