27-) 40% of the fish in a pond are goldfish and the rest are Koi. The number of goldfish is g.
The farmer then increases the number of Koi by 10%. How many Koi are there in the pond,
in terms of g, now?
28-)Three-fourths of the weight of a bunch of grapes is equivalent to three-fifths of the weight of
a papaya. If the grapes weigh (x + 28) pounds, what is the weight of a papaya in terms of x?
29-) Mr. Lee ordered some pizzas to be delivered. The bill for the pizza was m dollars.
Mr. Lee tipped the pizza delivery driver 15% of the bill.
a Write an expression for the total amount of money Mr. Lee paid.
b The bill for the pizza was $30. Find the amount of money Mr. Lee paid
30-)A box contains n quarters and some dimes. The ratio of quarters to dimes is 1 : 2.
a. Write an expression for the total amount of money in the box.
b. If there are 12 quarters, find the total amount of money in the box.
31-) Ms. Smith is considering two cell phone plans that charge for each call made.
The charges are shown below.
Cell Phone Plan Monthly Subscription Cost Per Minute
A $10 21.4¢/min
B $14 18.5¢/min
On average, Ms. Smith uses n minutes of calling time each month.
Write an expression for the total charges for Ms. Smith’s usage based on each cell phone plan.
If n = 100, find the total cost for each cell phone plan. Which cell phone plan should Ms. Smith choose? Justify your choice.
a Write an expression for the total charges for Ms. Smith’s usage based on each
cell phone plan. b If n = 100, find the total cost for each cell phone plan. Which cell phone plan should
Ms. Smith choose? Justify your choice.
32-) The admission fee to a museum is $12.50 per nonsenior adult, $8 per child,
and $6.50 per senior citizen. A tour group consists of m nonsenior adults,
5
4
m
+
6
children, and 8n senior citizens.
What is the total admission fee of the group?
Write an expression for the admission fees of the children in the group subtracted from the combined admission fees of the nonsenior adults and senior citizens in the group.
Evaluate your expression from b, when m = 24 and n = 4.
a What is the total admission fee of the group?b Write an expression for the admission fees of the children in the group subtracted
from the combined admission fees of the nonsenior adults and senior citizens in
the group.c Evaluate your expression from b, when m = 24 and n = 4.
33-) Which expression is equivalent to (4x + 3) + (−2x + 4)?
A −2x + 12
B −8x + 12
C 6x + 7
D 2x + 7
34-) Which expressions are equivalent to −minus3.75 + 2(−minus4y + 6.1) −minus3.25y ? Choose all that apply.
A 7y − 2y + 8.1
B 8.45 − 8y − 3.25y
C − 1.75 − 7.25y + 6.1
D − 11.25y + 12.2 − 3.75
35-)What is the value of k when the expression 21.2x + k is equivalent to 5.3(4x + 2.6)?
Write your answer and your work or explanation in the space below.
36-) A printer takes 2.4 seconds longer to print a page in color than a page in black and white.
A page in black and white can be printed in 4 seconds. There arecolor pages and
(1.2w + 5) black and white pages to print. How long does it take to print all the pages? Write
your answer and your work or explanation in the space below.
