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SAMPLE QUIZ 4:
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SEC. 2.4
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1. Solve for r: 48 = 12r
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2. Solve for p in each case: (a) -15 = 6p – p. (b) -14p + 8p = 6 - 60
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3. Solve for n: - n = - 75
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SEC. 2.5
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4. Solve for x: -5x – 4 = 16
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5. Note~you can solve in two ways—(i) keep that variable term
on the left when you solve for it or (ii) keep variable term on the right. Beware you may be dividing by a negative to solve but that's not a crime!
Just make sure your answer is correctly signed by checking if you're dividing two negatives or a negative and positive. Solve
for x: (a) -2x – 6 = 6x + 10 (b) -18 + 7x = 2x + 7
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6. Solve for y:
-18 + 13y + 3 = 3(5y – 1) – 2 ( I did this in class!)
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Sec. 3.1
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7. For some rectangle, you're given perimeter P and length L.
P is 30 cm and L is 12 cm. Find width W.
Hint: P = 2*L + 2*W.
After substituting the value for L, isolate W by first undoing addition
(subtracting) and
then
dividing (undoing multplication) by 2.
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8. What's
the perimeter of a parallelogram with one side 100 ft and the other side 60
ft?
MAKE A SKETCH
OF YOUR PARALLELOGRAM; IF NECESSARY GOOGLE
THE WORD
‘PARALELLOGRAM‘ TO SEE AN EXAMPLE. Answers will vary but
all structures
will have common attributes; the opposite sides are parallel, even though the
structure is
NOT right angled like a rectangle or special square.
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9. Find
perimeter P of right angled structure below. THAT MEANS ALL LINES
CROSS AT 90
DEGREES. You might pretend you’re working for a carpet
company laying
down sections. Study picture
carefully.
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Sec. 3.2
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10. What's the
area of the parallelogram?
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11. The height
h of a parallelogram is 13 cm and the area A is 52 cm 2. What is base
b?
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12. In
the shape of a rectangle, Raina’s
college recording studio is 4 m wide and 5 m long. She’s pasting a
sound-insulating
strip costing $6 per meter around the top edge of walls to absorb noise from upstairs
Chabot
student club office holding late hours. How much will she spend?
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