The manager of the school bookstore increased the price of a popular book from $11.75 to $12.57. she reduced the price of a less popular book by the same percent. if the less popular book was originally $18.75, what is the new price of this book? a.$17.93 b.$17.81 c. $17.53 d.$17.44

 D)   $17.44

Explanation:

First we need to calculate the percent increase of the popular book

A = old price = 11.75

B = new price = 12.57

C = percent change

C = 100*(B-A)/A

C = 100*(12.57-11.75)/(11.75)

C = 6.9787% approximately

The positive C value indicates a percent increase.

The less popular book gets roughly a 6.9787% price decrease or discount.

100% - 6.9787% = 93.0213%

The less popular book is now 93.0213% of its original price of $18.75

Apply this percentage to the original price

93.0213% of 18.75 = (93.0213/100)*18.75 = 17.4415 which rounds to 17.44

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

are ya tryin to ask something or is this a statement