 |
|---|
SELECT PAGE NO.
No Books/Pages Are Available |
SELECT PROBLEM NO. FOR THE PAGE |
| PAGE: 155 | SET: Exercises | PROBLEM: 25 |
Dale has a maximum of 
minutes on his cell phone plan.
Let 
be the number of day time minutes.
Let 
be the number of night time minutes.
The inequality is 
. Dale plans to use at least twice as many daytime minutes as night time minutes.
The inequality is 
.
If Dale uses atleast 
night time minutes and does not go over his limit.
The inequality is 
.
Day time minutes cost
, and night time minutes cost 
.
The function is 
.
Find the his maximum and minimum bill.
Write a system of inequality.
The function is .
Graph:
Graph the inequalities are 
and .
Observe graph:
The coordinate points are 
, 
and 
.
Make a table:
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Therefore, the maximum bill is 
and minimum bill is 
.
His maximum bill is and minimum bill is .
|
"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett |
|
"Your site is amazing! It helped me get through Algebra." Charles |
|
"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease |
Simply chose a support option
  
|