MAC 2105 Week 1 Quiz 1 | Score 85/100 | Keiser University

Course College Algebra
Test Week 1 Quiz 1
Started 1/15/22 8:37 PM
Submitted 1/15/22 9:30 PM
Status Completed
Attempt Score 85 out of 100 points
Time Elapsed 53 minutes
Results Submitted Answers, Correct Answers,
Displayed Feedback
 Question 1
5 out of 5 points

Given: f (x) = 4x^2-5, find f(5)
Selected 95
Answer:



Correct 95
Answer:



Answer
Feedback:
f(5) = 4(5)^2 - 5 Substitute 5 in for x. Order of operations
says to do exponents first getting 4*25 -5; now multiply getting
100 -5 =95.
Response f(5) = 4(5)^2 - 5 Substitute 5 in for x. Order of operations
Feedback:
says to do exponents first getting 4*25 -5; now multiply getting
100 -5 =95.
 Question 2
5 out of 5 points

Given : f(x)= 4x^2-5
Find f(-3) =




Selected 31
Answer:


Correct 31
Answer:


Answer
Feedback:
f(-3) = 4(-3)^2 - 5 Substitute -3 in for x. Order of operations
says to do exponents first getting 4*9-5, now multiply getting

, 36-5 = 31.
Response f(-3) = 4(-3)^2 - 5 Substitute -3 in for x. Order of operations
Feedback:
says to do exponents first getting 4*9-5, now multiply getting
36-5 = 31.
 Question 3
5 out of 5 points
Given : F(3)= -3x^2-x+2 , find f (-1/2)

Selected 7/4
Answer:


Correct 7/4
Answer:


Answer -3(-1/2)^2-(-1/2)+2 Powers first getting: -3(1/4)-(-1/2)+2
Feedback:
Multiply next getting:
-3/4+1/2+2. Get a common denominator of 4 or
-3/4+2/4+8/4= 7/4.


Response -3(-1/2)^2-(-1/2)+2 Powers first getting: -3(1/4)-(-1/2)+2
Feedback:
Multiply next getting:
-3/4+1/2+2. Get a common denominator of 4 or
-3/4+2/4+8/4= 7/4.


 Question 4
0 out of 5 points
Given : f(x)= 3x-7 for x>0

f(x)=-2x + 3 for x<0

Find : F(6)




Selected -9
Answer:


Correct 11
Answer:

 Question 5
5 out of 5 points