Given:
1. When f (x) = -7x+2, find f (5)
2. When f (x) = x³ + x² + 30x +22, find f(25)
3. When f (x) = √x + 22x² +24, find f (4)
4. When f (x) = x² + 24x, find f (√2)
5. When f (x) = 2x³ + x² - 22x + 8, find f (10)
6. When f (x) = x5 + 3x ³-24x -28, find f (2)
7. When f (x) = x² + 2x +1, fid f (32)
8. When f (x) = 16x³ + 18x² +15x, find f (18)
9. When f (x) = x² +325x, find f (√3)
10.When f (x) =25x³ +2x² +3x +2, find f (2)
11. When f (x) = 50x -25, find f (2)
12.
When f (x) = 2x² +38x +5, find f (√2)
13.When f (x) = 9x² +124x -2, find f (6)
14.When f (x) = x³ + x² + x, find f (9)
15.When f (x) = x³ + x² + x, find f (-3)
16. When f (x) = 25x +26, find f (10)
17.When f (x) = 2x5 +3x4 -4x³ -6x, find f (2)
18.When f (x) = 9x² -3x +22, find f (3)
19.When f (x) = 6x² + 7x +2, find f (7)
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1

Answers

2014-01-13T01:18:42+08:00
All you have to do is substitute the x with the value given then input it in your calculator. Double check my answers just to be sure.

1. When f (x) = -7x+2, find f (5)
f(5) = -7(5) + 2
f(5) = -35+2
f(5) = -33

2. When f (x) = x³ + x² + 30x +22, find f(25)
f(25) = (25)³ + (25)² + 30(25) +22
f(25) = 17022

3. When f (x) = √x + 22x² +24, find f (4)
f(4) = 378

4. When f (x) = x² + 24x, find f(√2)
f(√2) = 2+24√2 = 35.94

5. When f (x) = 2x³ + x² - 22x + 8, find f (10)
= 1888

6. When f (x) = x5 + 3x ³-24x -28, find f (2)
= -20

7. When f (x) = x² + 2x +1, fid f (32)
=1089

8. When f (x) = 16x³ + 18x² +15x, find f (18)
=99414

9. When f (x) = x² +325x, find f (√3)
= 565.92

10.When f (x) =25x³ +2x² +3x +2, find f (2)
=216

11. When f (x) = 50x -25, find f (2)
=75

12. When f (x) = 2x² +38x +5, find f (√2)
=62.74

13.When f (x) = 9x² +124x -2, find f (6)
=1066

14.When f (x) = x³ + x² + x, find f (9)
=819

15.When f (x) = x³ + x² + x, find f (-3)
= -21

16. When f (x) = 25x +26, find f (10) 
= 276

17.When f (x) = 2x5 +3x4 -4x³ -6x, find f (2)
= 68

18.When f (x) = 9x² -3x +22, find f (3)
= 94

19.When f (x) = 6x² + 7x +2, find f (7)
= 345
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