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- 1. Multiple ChoiceDetermine the values of
a, b, and c for
the quadratic equation:
4x2 – 8x = 3a = 4, b = -8, c = 3a = 4, b =-8, c =-3a = 4, b = 8, c = 3a = 4, b = 8, c = -3 - 2. Multiple Choice
Use the quadratic formula to find the solutions for
y = -x2 - 5x + 12
-4.9 and -0.1
-8.54 and 8.54
-0.45 and 3.55
-6.77 and 1.77
- 3. Multiple Choice
If the discriminant equals 0, then the quadratic has:
1 Rational Solution
2 Rational Solutions
No solutions
2 Complex Solutions
- 4. Multiple Choice
If the discriminant is positive but NOT a perfect square, then the quadratic has:
1 Rational Solution
2 Irrational Solutions
2 Rational Solutions
2 Complex Solutions
- 5. Multiple Choice
Solve the equation by factoring.
x = {3,8}
x = {-3,8}
x = {3,-8}
x = {-3,-8}
- 6. Multiple ChoiceWhat is another word for zeros?y-interceptsrootsvertexaxis of symmetry
- 7. Multiple ChoiceSolve using the Quadratic Formula.ABCD
- 8. Multiple ChoiceABCD
- 9. Multiple ChoiceWhat type of function is f(x)=2(1/7)x ?Exponential GrowthLinearExponential DecayNone of the Abovee
- 10. Multiple ChoiceSimplify the exponential expression.2x6y122x5y78x6y128x5y7
- 11. Multiple ChoiceA new savings account is opened with $400 and gains 3% every year. What is the exponential function?f(x)=400(1+3)xf(x)=400(1-0.03)xf(x)=400(1+0.03)xf(x)=400(0.03)x
- 12. Multiple ChoiceThe amount of ants in a colony, f, that is decaying can be modeled by f(x) = 800(.87)x, where x is the number of days since the decay started. By what percentage is the colony decaying?87%13%800%8.7%
- 13. Multiple ChoiceThe amount of ants in a colony, f, that is decaying can be modeled by f(x) = 800(.87)x, where x is the number of days since the decay started. Suppose f(20) = 49. Which of the following is true?After 20 days, there are 49 ants in the colony.After 49 days there are 20 ants in the colony.The amount of ants times 20 is 49.After 20 days the amount of ants remaining decreases by 49.
- 14. Multiple ChoiceFind the error in the problem below
19 - 2k = 3k - 1
+3k +3k
19 + 1k = -1
-19 -19
k = -20They should have divided by 1 for the last stepThey should add 19 instead of subtracting 19I can not find an errorInstead of adding 3k they should subtract 3k - 15. Fill in the Blank
What is the next term in the sequence 11, 25, 39, ...?
- 16. Multiple Choice
What are the next 3 terms in the following geometric sequence:
512, 256, 128, ___, ___, ___, ...
1024, 2048, 4096
32, 8, 2
64, 32, 16
92, 66, 38
- 17. Multiple ChoiceDetermine whether the sequence is arithmetic, geometric, or neither.arithmeticgeometricneither
- 18. Multiple ChoiceSimplify3x²y²z√3yz3xyz√xy²3xyzCan't Simplify
- 19. Multiple ChoiceSelect the graph for y > -2x - 3ABCD
- 20. Multiple ChoiceWhich point below is NOT part of the solution set?(0, 0)(-10, -10)(-1, 5)(5, 20)
- 21. Multiple ChoiceSolve the system of equations by elimination.
-x + y = -13
-8x - 4y = -8(5, 8)(5, -8)(-5, -18)(-5, 8) - 22. Multiple Choice
Multiply the second equation by 2 and the result to the first equation.
Multiply the second equation by -2 and the result to the first equation.
Multiply the first equation by 7 and the second equation by -5 and add the resulting equations.
Multiply the first equation by -7 and the second equation by -5 and add the resulting equations.
- 23. Multiple Choicef(x) = 2x2 + 12x + 16
What is the average rate of change of f(x) on the interval [-3, -2].21/2-2-1/2 - 24. Multiple ChoiceFind the average rate of change of Pete's height from 3 years old to 5 years old.2 inches per year8 inches per year2 years4 inches per year
- 25. Multiple ChoiceFind the average rate of change over the given interval.477/33/7
- Answer choicesTagsAnswer choicesTags