#$&*
course Mth 163
3:22 p.m. 1/9/13
1.The answer is 32 dollars. If you work for 4 hours and get paid 8 dollars/hour, you take 4 x 8 which = 32 dollars.OK
2.The answer is 14 dollars per hour. To get the rate of dollars you earned per hour you simply take 168 divided by 12 and you get 14 which is the answer.
OK
3.The answer is 9 hours. If you take 72 dollars divided by 8 dollars/hour you get 9 hours.
OK
4.(8+3)*5= 55 ; 8+3*5=23; the difference between the two questions is the parentheses, you have to do the order of operations.
3
5.(2^4)*3 = 48 ; 2^(4*3)= 144 ; To evaluate (2^4)*3 you have to calculate what is in the parentheses. 2^4=16*3=48. To evaluate 2^(4*3) you have to calculate what is in the parentheses. 4*3=2^12=4096.
OK
6.To evaluate 3*5-4*3^2 you have to solve 3^2=9 now rewritten is 3*5-4*9 now you have to do the multiplication which 3*5=15 and 4*9= 36 now subtracting them 15-36=-21. To evaluate 3*5-(4*3)^2 you have to calculate the parentheses 4*3=12 which is connected to ^2 which = 144 now you have to calculate 3*5-144=15-144=-129
3
7.To get this answer you have to substitute the numbers in the x column for the x in the equation. Y= 2(-2)+3 y=-4+3 y=-1 ; y=2(-1)+3 y=-2+3 y=1 ; y=2(0)+3 y=0+3 y=3 ; y=2(1)+3 y=2+3 y=5 ; y=2(2)+3 y=4+3 y=7
X Y
-2 -1
-1 1
0 3
1 5
2 7
The line in the graph increases up in a positive linear line.
OK/3
8.
X Y Y=x^2+3
-2 7 Y= -2^2+3=4+3=7
-1 4 Y=-1^2+3=1+3=4
0 3 Y=0^2+3=0+3=3
1 4 Y=1^2+3=1+3=4
2 7 Y=2^2+3=4+3=7
This graph makes a V shape with the lowest point being on the Y axis at (0,3).
OK/3
9.
X Y Y=2^x+3
1 5 Y=2^1+3=2+3=5
2 7 Y=2^2+3=4+3=7
3 11 Y=2^3+3=8+3=11
4 19 Y=2^4+3=16+3=19
The graph is a exponential line that increases from left to right.
OK/3
10.It will be equal to the original number because if you divide any number by 1 you will get the same number.
OK
11. If a number is divided by a number greater than 1 the answer will be less than the original number.
3
12. If a number is divided by a number less than 1 the answer will be greater than the original number.
2
13. I can’t find anything.
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Self-critique (if necessary):
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Self-critique rating:
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Very good.
Note, however, that you need to submit the entire document, without deleting anything.
In other words, copy the indicated part of the document, insert your answers in the specified places, and submit without removing anything.
The program I'm using to review these files relies on certain codes in the original document, so that I can very quickly locate your responses without having to visually scan the document. This speeds the process up greatly, giving me more time to give students the assistance they need.
No need to repeat this document, but be sure to follow this practice on future submissions.
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