Chapter 21: Extra Practice 28929. 43
357
15
30.^27
50
1
2
- 3.78 + 9.3
- 29.3 – 18.53
- 6.23 v 2.04
- 4.374 z 1.2
- 1.1 z 0.88
Use a proportion to solve each problem.
- If 6 plants require 4.5 ounces of water, how
much water will 27 of the same type of
plant need? - The ratio of dark chocolate candies to milk
chocolate candies in a particular mixture is
3 to 7. If you buy 5 pounds of the mixture,
how many pounds of dark chocolate candies
will it contain? - A certain rye bread recipe calls for 4 cups
of wheat f lour and 3 cups of rye f lour. You
have a 5-pound sack of rye f lour, which
measures out to 22.5 cups, and you’d like to
use it all. How much wheat f lour will you
need? - Jeff is ordering food for a Super Bowl party.
The caterer’s brochure says that 6 gallons
of chili will feed 40 people. If 100 people
are expected at the party, how much chili
should Jeff order? - Leslie designed a drapery panel that is made
from 2 yards of print fabric and 5.5 yards of
solid fabric. To cover all the windows in her
living room, she will need 90 yards of fabric
in total. How many yards of solid fabric
should she order?
Solve.- What is 18% of 45?
- Thirty-three is what percent of 110?
- 38 is 16% of what number?
- What is the percent decrease in the price of
a rug that originally sold for $850 and is on
sale for $629? - A mountain bike that originally sold for
$600 increases in price to $675. What is the
percent increase in the price?
Part II: Algebra ..........................................................................................................................
Simplify each expression.- 371225 xx x
- 45 3xx29 7
48.^35 23 15^12
5
xx 49. 25 1 8 2
9tt
t - 75 yy2 86 5
Solve each equation or inequality.- 7125 4xx
- 11 tt 49 2 7 5
- -46 111yy 2 - 1
- 11 3 xx 2 1