Math 91 Hw & Questions

HW#1 7.1  2,8,12,30,32,34,38,40,44,46,48,50
HW#2 7.2 4,8,12,16,20,22,24,28,30,34,38,42,44,48,52,56
HW#3 7.3 4,12,20,56,62
HW#4 7.4 4,6,8,10,12,18,24,32,34,36,38,42,46,52,54,56,58,60
HW#5 7.5 4,8,10,14,18,20,24,28,30,36,38,40,42,46,48,50,52,54
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HW#6 7.6  8,10,14,16,18,20,22,24,26,28,34,36,38,40,44,46,52,56
HW#7 7.7  4,6,8,10,12,14,18,22,26,30,32,34,36,38,40,44,46,48,50
HW#8 8.1  6,8,10,16,18,22,24,26,32,36,40,42,46,48,50,52,54,56,58,60
HW#9 8.2  2-42 even
HW#10 8.3  4,6,10,12,16,20,28,32,40,42,44,46
HW#11 8.4  10,12,22,24,26,40,42,44
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HW#12 9.1  2,4,10,12,14,16,18,20,22,24,26,28,30,34,36,38,40,42,44,46,48,50,60,64,66,68,70
HW#13 9.2  24-68 even
HW#14 9.3  30-64 even
HW#15 9.4  20,24,30,34,38,42,50,54,58,62,66,70,72
HW#16 10.1  4,8,12,16,20-86 even, 90
HW#17 10.2  2,6,10,14,20,24,28,32,36,40,44,48,52,56,60,62,66,70,72,76,80,84,88,92,96
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HW#18 10.3  4,8,12,14,18,22,26,30,32,36,40,44,48,52,56,60,62,66,70,74,76,80,84,90,96
HW#19 10.4  2,6,10,14,18,22,26,30,34,38,42,48,52,56,60,64,68,72,76
HW#20 10.5  4,8,12,16,20,24,28,32,42,46,50,54
HW#21 10.6  26,30,34,38,42,46,48,50,54,58
HW#22 10.7  6,12,16,20,26,28,32,34,38,42,46,56,60,80,84,86
HW#23 11.1  38,44,50,56,58,64,70,74
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HW#24 11.2  6,12,18,24,28,32,36,40
HW#25 11.3  12,26,32,36,40,44,48,52,56,58
HW#26 11.5  32-54 even
HW#27 11.6  24-54 even



1. Explain why the rule (a^n)(a^m)=a^(n+m) makes sense.
2. Explain why the rule (a^n)/(a^m)=a^(n-m) makes sense.
3. Explain why a^0 = 1 makes sense.
4. Explain why (a^n)^m=a^nm makes sense.
5. Explain why a^(-n)=1/a^n makes sense.
6. Given and example to show that when multiplying both sides
of an inequality by a negative number the sign flips
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7. Use the slope formula to find the equation of all points 
(x,y) that have slope m with point (x1,y1)
8. Explain why Ax+By=C is a line (not both A & B 0)
9. Geometrically what are we doing with Algebra in 4.1?
10. Geometrically what are we doing with Algebra in 4.2?
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11. If you write down a polynomial at random, how likely is it
that it would factor?
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12. T/F  The square root of x squared = x. Explain.
13. T/F  The cube root of x cubed = x. 
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