Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 15
By Formative Library
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Last updated over 2 years ago
13 Questions
1
1.
Evaluate each expression, giving the answer in scientific notation:
5.3⋅10^{4} + 4.5⋅10^{4}
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2.
Evaluate each expression, giving the answer in scientific notation:
3.7⋅10^{6} - 3.3⋅10^{6}
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3.
Evaluate each expression, giving the answer in scientific notation:
4.8⋅10^{-3} + 6.3⋅10^{-3}
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4.
Evaluate each expression, giving the answer in scientific notation:
6.6⋅10^{-5} - 6.1⋅10^{-5}
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5.
Write a scenario that describes what is happening in the graph.
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6.
What is happening at 5 minutes?
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7.
What does the slope of the line between 6 and 8 minutes mean?
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8.
Apples cost $1 each. Oranges cost $2 each. You have $10 and want to buy 8 pieces of fruit. One graph shows combinations of apples and oranges that total to $10. The other graph shows combinations of apples and oranges that total to 8 pieces of fruit.
Name one combination of 8 fruits shown on the graph that whose cost does not total to $10.
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9.
Apples cost $1 each. Oranges cost $2 each. You have $10 and want to buy 8 pieces of fruit. One graph shows combinations of apples and oranges that total to $10. The other graph shows combinations of apples and oranges that total to 8 pieces of fruit.
Name one combination of fruits shown on the graph whose cost totals to $10 that are not 8 fruits all together.
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10.
Apples cost $1 each. Oranges cost $2 each. You have $10 and want to buy 8 pieces of fruit. One graph shows combinations of apples and oranges that total to $10. The other graph shows combinations of apples and oranges that total to 8 pieces of fruit.
How many apples and oranges would you need to have 8 fruits that cost $10 at the same time?
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11.
Solve each equation and check your solution.
-2(3x-4)=4(x+3)+6
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12.
Solve each equation and check your solution.
\frac{1}{2}(z+4)-6=-2z+8
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13.
Solve each equation and check your solution.
4w-7=6w+31
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