Pre-Algebra: Pg. 45 - 46 #20 - 23, 27 - 34
Test Thursday!
Algebra Students: Here are the answers to your homework assignment tonight. Work the problems on your own first, then check your answers here. You must correct any that you miss, and once again that does mean reworking the problem, not just writing in the correct answer. It doesn't matter if you get them all right or all wrong (although you may want to practice some more if that happens), if you come to class tomorrow with the assignment done and corrected, your score will be 8/8.
Page 40:
T3.
a) 35
b) 110
T5.
a) x = 6
b) x = 75
c) x = 133
d) x = 6
T7.
a) 11^3 (that's "11 to the 3rd power")
b) y^5 ("y to the 5th power", I'm limited as to how I can type on this thing).
c) 17 + x
d) 17x
e) x(z + 8)
f) 8z + x
g) (r + s) / (r - s) (that is the fraction "r plus s" divided by "r minus s")
Page 88:
T5.
a) 3
b) 9
c) -27
d) -9
e) 63
f) 51
T6.
a) -21 - 7x
b) -36x
c) 10x
T8.
a) 40x + 55 (note that the units they give you are cents, if you did dollars, you should have "0.40x + 0.55")
b) 7 pieces
c) i. $2.55 ii. $5.35
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