2009-06-23_161319_logreview

							2.) Which car gives the better gasoline mileage in making
the same trip: the car that goes 340 miles on 10 gallons
of gasoline or the car that goes 500 miles on 15 gallons of gasoline?
First = 340/10 = 34 mpg
Second = 500/15 = 33.333 mpg
The first one is better.

Give the dimensions of rectangles MNOP and XYTZ sothat both are similar to rectangle ABCD




6/x = 16/8
6/x = 2
2x = 6
X=3
MNOP is half the size of ABCD, so MP = 3

6/9 = 16/x
6x = 144
X = 24
XYTZ is 3/2 the size of ABCD, so ZT = 24


10). If 3 sacks of chips cost $4.50, how much would you
expect 10 sacks to cost?
4.5 / 3 = x / 10
3x = 45
X = 15
$15


14). Kathy and Tommie put down 20%, or $35,000, to purchase
a new house. What is the price of the house?
35000/0.2
= 175000
18). In one year, the Dow Jones Industrial Average increased
from 3,945 to 4,386. What percent increase does this
represent to the nearest tenth of a percent?
(4386-3945)/3945
0.111787
= about 11.2%


22). Sybil is planning a trip to Paris. She estimates that 1 euro
is worth about 1.2 U.S. dollars. Her budget for the trip
allows $150 per night for a hotel room. What is the maximum
number of euros she should pay for a room?
1 / 1.2 = x / 150
1.2x = 150
X = 125



26). The Free Throw Problem. A basketball player has
made 135 free throws in 180 attempts. Of the next 50 free
throws attempted, how many would she have to makeraise her percent of free throws made by
5%?
(135+x)/(180+50) = 135/180 + 0.05
(135+x)/230 = 0.8
135+x = 184
X = 49