If a pizza costed $7.50 in 2000. and a pizza costed $9.00 in 2015. what is the percent change in the cost?
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Work Shown:

A = starting value = 7.50

B = ending value = 9.00

C = percent change

C = 100*(B-A)/A

C = 100*(9.00 - 7.50)/7.50

C = 100*(1.50/7.50)

C = 100*0.2

C = 20%

The positive C value indicates we have a percent increase.

Take 20% of 7.50 and you'll get 1.50, which adds to 7.50 to get 9.00; this is a longer way of saying "the value has gone up by 20%"

Notice how I didnt involve the year values of 2000 and 2015 at all. They don't matter as you can use any two year values you want, and you would get the same answer. Those numbers were likely thrown in as a distraction.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0