Consider the two expressions 4b(b+1) and (2b+7)(2b-8). compare their values if b=-3, b=-2, and if b=10. is it true that for an value of b the value of the first expression is greater than the value of the second expresiion? plz quick.

FIRST EXPRESSION:

-  If , the value of is  

-  If , the value of is  

- If , the value of is  

 SECOND EXPRESSION:

-  If , the value of is  

-  If , the value of is  

- If , the value of is  

Yes, for any value of "b" the value of the first expression is greater than the value of the second expression.

Step-by-step explanation:

Substitute the given values of "b" into each expression and evaluate.

- For the first expression , you get:

If →

If →

 If →

 - For the second expression , you get:

If →

If →

 If →

You can observe that for any value of "b" the value of the first expression is greater than the value of the second expression.

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.