Transcript 4/11 Adv. Alg/Trig Bell Ringer

4/11 Adv. Alg/Trig Bell Ringer
ON A SHEET OF
NOTEBOOK PAPER
This is #6 from Fri
This is #8 from Fri
A company earned a profit of
$8.0 million each year for 3
consecutive years. For
each of the next 2 years
the company earned a
profit of $9.0 million. For
this 5-year period, what
was the company’s
average yearly profit, in
millions of dollars?
A. 8.2 B. 8.25 C. 8.4
D. 8.5 E. 8.6
Kalino earned 85, 95, 93, and 80
points on the 4 tests, each
worth 100 points, given so
far this term. How many
points must he earn on his
fifth test, also worth 100
points, to average 90
points for the 5 tests given
this term?
A. 87B. 88
C. 90
D. 92E. 97
Review # 11?
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Susan recorded the number of customers
visiting her bookstore each day for five days,
as shown in the table below. What was the
average number of customers for these five
days?
48
50
53
55
56
4/11 News and Notes
• Perfection Award: 8th
Period
• HW Checked?
• MVPs
– 2nd: OSCAR
– 4th: EMMANUEL
Perfection Competition Daily Results
1
1
1
1
1st
2nd
4th
1
0.5
0
7th
8th
This week:
• Today: Properties of Exponents
• Tuesday: Mr. C doing IB Evaluations,
class works on 20 ACT Questions.
• Wednesday: Area and Perimeter
• Thursday: Angle relationships
– Spring Break ACT with solutions handed out.
• Friday: Sub, because Mr. C is off to
EUROPE!!!  20 more ACT Questions
Quick Examples
1. x3(x2)
= x3+2 = x5
2.
3.
x  = x *
3 2
3 2
= x6
3
x
2
x
= x3-2 = x1 = x
Example #1
• Simplify:
4
7
12x y
2 7
3x y
• 12/3 = 4
• X4/x2 = x4-2 = x2
• Y7/y7 = y7-7 = y0 = 1
4 x *1  4 x
2
2
Example #2
• What is the sum of (3x2 + 2x + 4) and
(4x3 + 2x2 – x – 7)?
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Sum means ADD
(3x2 + 2x + 4) + (4x3 + 2x2 – x – 7) =
4x3 + 3x2 + 2x2 + 2x – x + 4 – 7 =
4x3 + 5x2 + x – 3
Reminder about tomorrow
• Sub should give you 20 ACT problems
with solutions. Work through them
together!