Carrie is driving to a friend’s house for the weekend. the friend lives in a town 160 mi. away. so far, carrie has driven 64 mi. what percent of the drive does she have left?

Divide the amount she drove by the total amount she needs to drive, them multiply that answer by 100 to make it a percent. This will give you the percentage she drove. To find the percentage she has left,, subtract from 100%.

64 / 160 = 0.4

0.4 * 100 = 40%  (  percent she has already driven)

100% - 40% = 60% left.

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