NON-CALCULATOR Please print and show all work in space provided. NO WORK = NO CREDIT! Simplify: 1.
10x 2 y 40xy 3
2.
3
54a 3b7
1. ____________________
2. ____________________
3.
3 27 7 3 2 12
4.
2
9m 2 4
3. ____________________
4. ____________________
2
5.
27 3 3
6.
32
3
5
5. ____________________
6. ____________________
7.
64x
1
3
2
3
8.
2x
1
2
4
3x
2
3
3
7. ____________________
8. ____________________ Inverse – Find the equation for the inverse relation. 9. y = -2x + 5
9. ___________________
10. Verify, using composition of functions, that problem number 9 (above) and its inverse are inverse functions.
For problems 11-13, let f ( x) 2 x 9 and g ( x)
2 . Perform the indicated operations and, for x2
problems 12 and 13, state the domain. 11. f ( g ( x))
12. f ( f ( x))
11. f ( g ( x)) = ____________ Domain:_________________
12. f ( f ( x)) = ____________ Domain:_________________ 13. g ( f (5)) 13. g ( f (5)) = ____________
For problems 14 and 15, let f ( x) 3x3/10 and g ( x) 2 x1/5 . Perform the indicated operations and state the domain. 14. f ( x) g ( x)
15.
f ( x) g ( x)
14. f ( x) g ( x) = _________ Domain:________________ 15.
f ( x) = _________ g ( x)
Domain:_______________
Solve the following equations and check for extraneous solutions. 16.
3
2 x 2 4
17. x 1 2 x 5
16. x = __________
17. x = _________
Graph the given function, you must plot at least 3 points for the square roots and 5 points for the cube roots. Identify the transformations as well as the Domain and Range for each function. 18. y
1 x3 2
Transformations:
19. y 3 x 2 1
Transformations:
__________________
________________
__________________
________________
_________________
________________
Domain:_________________
Domain:_________________
Range:
Range:
x
___________________
y
x
y
x
_____________
y
x
y
20. Write the equation for a square root function whose domain is [-2, ∞) and whose range is [2, ∞)
20. ___________________
CALCULATOR Solve- Round to three decimal places if necessary. 21. 3x2 – 90 = 0
21. ___________________
22. x4 12 32
22. ___________________
23.
x 2
3
24. (𝑥 − 5)
25. 𝑥
4⁄ 5
25
2⁄ 3
23. ___________________
−2=2
24. ________________
+ 1 = 65
25. __________________
Problem Solving: 26. A small company sells computer printers over the Internet. The company’s total monthly Revenue (R) and Costs (C) are modeled by the functions R(x) = 120x and C(x) = 2500 + 75x, where x is the number of printers sold. a) Find R(x) – C(x)
26 a) ________________
b) Explain what this difference means. _______________________________________________________
27. The maximum horizontal distance d that an object can travel when launched at an optimum angle of projection is given by: d
vo
vo
2
2 gho
where ho is the objects initial height, vo is its initial speed, and g is g the acceleration due to gravity. Simplify the model when ho = 0.
27. ___________________
28. In this cylindrical water tank there are 31,400cm3 of water. The radius of the tank is 200cm. Find the height of the water in the tank. Remember: Volume r 2 Height
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2 mol Al x. 2. 3. 1 mol Cr O. 26.98 g Al. 1 mol Al x. 7.10 g Al. = mass of Al(s) required to have a 20% excess = 120% 7.10 g 8.52 g x. = Part 2. (Pages 350â351).
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