Chapter 6 –
Guess and Check – Day 2
POD –Page
Plato has
58 coins in nickels, dimes, and quarters.
The number of nickels is three less than twice the number of dimes. The total value of the coins is $7.40. How many of each type of coin does Plato
have?
Put a couple of solutions on
transparency, discuss and compare
Homework – Page
Questions -
Transparency??
First – Re-consider – Cactus Problem - Maximize Revenue versus Maximize Profit
A gift shop
chain in the Southwest presently sells miniature cactus gardens for $20
each. It costs the chain $10 per garden
for materials, assembling, and packaging.
The chain’s management is considering changing the price per garden to
improve total profits from the gardens.
At the present price the chain sells 200/wk. Marketing consultants have told the chain
that for each decrease of $1 in the present selling price, the chain can sell 5
additional gardens above the 200.
Similarly, for each $ increase in the selling price, the chain will sell
5 gardens few than the 200. (For
example, at a price of $21 each, the chain will sell 195; at a price of $22
each, the chain will sell 190; and so on.)
Management wants to know whether it should raise or lower the selling
price and by how much in order that it’s total income from the gardens will be
as large as possible.
IN CLASS - Fixin’ the Bike
Your friend
bought a bicycle and worked to make it better.
He then sold it for $45. How much
did your friend pay for the bicycle if his profit was twice the amount he
originally paid?
IN CLASS – Construction Tools
A compass
and a ruler together cost $4. The
compass costs 90 cents more than the ruler.
How much does the compass cost?
IN CLASS – “Don’t Fence Me In”
A farmer
needs to fence a rectangular piece of land.
She wants the length of the field to be 80 ft. longer than the
width. If she has 1080 ft. of fencing
material, what should the length and the width of the field be?
IN CLASS – Dress Up
A shirt and
a tie sell for $9.50. The shirt costs
$5.50 more than the tie. What is the
cost of the tie?
IN CLASS – Math is Fun!
Toma’s team
entered a mathematics contest where teams of students compete by answering
questions that are worth either 3 points or 5 points. No partial credit was given. Toma’s team scored 44 points on 12
questions. How many 5-point questions
did the team answer correctly?
Assignment - POD – “SuperSize It”
Place the
digits 1, 2, 4, 5, and 7 in the following boxes so that
(i) the
greatest product is obtained
(ii) the
greatest quotient is obtained:
i)
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(ii)
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Homework: Page
156; #7
Page 160; #2, #3 but only 10 days