Geoff has had, for a long time, a savings account with an annual interest rate of 3.65%. Now, however, the bank wants to change his rate to 0.3% monthly. Should Geoff accept this change?

No

Step-by-step explanation:

He will lose 0,05% of the profit

12 x 0,3 = 3,6

3,6 - 3,65 = -0,05

x + 4/7

step-by-step explanation:

use cymath

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