Jackson sells top-of-the-line programmable sewing machines for singer sewing machine company for every sewing machine he sells he makes a 9% commission he sells a sewing machine for $1,500 a) how much is his commission b) jackson wants to purchase a new stove for his kitchen that cost $799 with a sales tax of 7.5% how many 1500 sewing machines must he sell in order to purchase the stove using the money he earned in commission

$27.5

step-by-step explanation:

$110.00 divided by 4

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