3. If a two-digit positive integer has its digits reversed, the resulting
integer differs from the original by 27. By how much do the two digits
differ?
A 3
B 4
C 5
D 6
E 7
4. A garden center sells a certain grass seed in 5-pound bags at $13.85
per bag, 10-pound bags at $20.43 per bag, and 25-pound bags $32.25
per bag. If a customer is to buy at least 65 pounds of the grass seed, but
no more than 80 pounds, what is the least possible cost of the grass seed
that the customer will buy?
A $94.03
B $96.75
C $98.78
D $102.07
E $105.3
5. If the positive integer x is multiple if 4 and the positive integer y is a
multiple of 6, then xy must be a multiple of which of the following?
I 8
II 12
III 18
A II only
B I and II only
C I and
III only
D II and III only
E I, II and III
6. Estimate the following expression.
Sinx *
1
𝑛
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