Answer:
He bought 17 books.
Step-by-step explanation:
Given that:
Total money spent = $89
Cost of each book = $5
Shipping price = $4
We have to find, Total number of books
So if the number of books be represented by b, the equation will become:
Cost of one book * total number of books + shipping price = total money
Putting values we get:
5*b + 4 = $89
By simplifying:
5*b = 89 - 4
5*b = 85
Dividing both sides by 5 we get:
b = 17
So the total number of books bought is 17.
i hope it will help you!
Answer:
Option A
Step-by-step explanation:
step 1
Find the equation of the inequality A (solid line with negative slope)
we have the points
(0,2) and (1,-1)
The slope is
![m=(-1-2)/(1-0)=-3](https://tex.z-dn.net/?f=m%3D%28-1-2%29%2F%281-0%29%3D-3)
The equation in slope intercept form is equal to
![y=-3x+2](https://tex.z-dn.net/?f=y%3D-3x%2B2)
The solution of the inequality is the shaded area above the solid line
so
The inequality is
----> inequality A
step 2
Find the equation of the inequality B (solid line with positive slope)
we have the points
(0,-3) and (3,0)
The slope is
![m=(0+3)/(3-0)=1](https://tex.z-dn.net/?f=m%3D%280%2B3%29%2F%283-0%29%3D1)
The equation in slope intercept form is equal to
![y=x-3](https://tex.z-dn.net/?f=y%3Dx-3)
The solution of the inequality is the shaded area below the solid line
so
The inequality is
----> inequality B
therefore
The system of inequalities is
-2*( (X-2y)=4 )
-2x+4y=8
2x-y=1
3y=9 y=3 2x-3=1 x=4
Answer:
Step-by-step explanation:
satisfy the function: ![ax^2 + bx + c](https://tex.z-dn.net/?f=ax%5E2%20%2B%20bx%20%2B%20c)