Wednesday

October 22, 2014

October 22, 2014

Posted by **Melissa** on Thursday, September 22, 2011 at 8:16pm.

a) use function notation to express the final answer in terms of the orginal number

b)determine the outputs for the input numbers 1, -1, & 7

c) determine the maximum result possible

- Math -
**Steve**, Friday, September 23, 2011 at 1:25pmStart with n. Follow the steps:

x5 = 5n

from 20 = 20 - 5n

xn = n(20-5n)

a) 20n - 5n^2

b) f(1) = 15

f(-1) = -25

f(7) = -105

c) 20n-5n^2 = 5n(4-n)

This is zero at n=0,4

It thus attains its maximum at x=2

f(2) = 20

**Answer this Question**

**Related Questions**

math - a teacher asked her students to think of a number, multiply by 5, and ...

math - a teacher asked her students to think of a number, multiply by 5, and ...

Math, Please Help! - Ned divided a given number by 3 and then added 2. If he ...

math - Mrs. Brock's class has 23 students. Each student has 8 markers. Which ...

math - Mrs. Brock's class has 23 students. Each student has 8 markers. Which ...

Word Problem- Algebra - 1. Multiply a number by 4, then multiply this product by...

Math - If you multiply a number by 3 and then add 40, the result is the same as ...

math-5 - Which choice is the answer? Show me please. Tara spent 3 hours doing ...

Math - How could you use the product 108 and 4 to find the product of 324 and 4...

need guidance on an algebra problem - 20 x+3(y-1)=11 2(x-y)+8y = 28 multiply ...