course 151-41
Q3: If you are earning $8/hour and want to work long enough to earn $72 then you would take the $72 you want to earn and divide that by how much you make and hour and reach the conclusion that you need to work 9 hours to earn $72 if you make $8/hour3
Ok
Q4: If you calculate (8+3)*5 you will get 55 as your answer and if you calculate 8+3*5 then you will get 23 as your answer. The reason for this is because the rule of order of operations. The calculator will do 8+3 first if it is in () and then times the answer which is 11 by 5 and get 55. But if you take it out of () then it will multiply 3*5 and get 15 and then add that to 8 which is 23. Order of operations starts with what is in ()
3
Ok
Q5: If you calculate (2^4)*3 you are going to do 2^4=16*3= 48. But if you do 2^(4*3) you will do what is in () first and get 12 then it would look like 2^12 which = 4096. Once again this is order of operations
3
Ok
Q6: If you Calculate 3 * 5 - 4 * 3 ^ 2 you would do 3*5 which is 15 then 15-4= 11 and then 11*3=33 and then raise that to the second power and it give you 1089. Then if you calculate 3 * 5 - (4 * 3)^2 you would start with 4*3 which would be 12 then you do 3*5-12^2 which gives you 9.
3
Ok
Q7: If y=2x+3 then you plug -2 in for y so it would be 2(-2)+3= -1 the next answer is 2(-1)+3=1 then 2(0)+3= 3 then it is 2(1)+3=5 then 2(2)+3= 7. When you plot these points on a line -2,-1 -1,1 0,3 1,5 2,7 then you get a straight line which would be a linear graph
2
needed to make a table to help it make more sense
Q10: If you divide any number regardless of the number by 1 you will get the original number even 0 divided by 1 is 0
3
should give examples showing this
Q11: If you divide a number by something greater then 1 then the oringinal will be smaller with each increase in the number you divide by
2
show some examples
Q12: If you divide a positive number by a positive number smaller than one then the smaller number number you divide by the greater the original number will be
2
ok"
Your explanations are good, but for future assignments make note of the following:
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