I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

The cost of the most expensive book which he can buy with his money is less than or equal to 43.5

Step-by-step explanation:

Given : I'm at a bookstore with $35 in my pocket and a 20%-off coupon.

To Find: . What is the cost of the most expensive book I can buy with my money and the coupon?

Solution :

let the cost of most expensive book be x

Since there is 20 % of on every book

So, After 20 % off on the most expensive

The cost will be :  x  - (x of 20%)

Since we are given that he has only $35 so he cannot pay more than 35

so, equation becomes :

So , the cost of the most expensive book which he can buy with his money is less than or equal to 43.5

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: