IM 8.7.4 Practice: Dividing Powers of 10

Evaluate:
[math]10^0[/math]
[math]\frac{10^3}{10^3}[/math]
[math]10^2+10^1+10^0[/math]
Write each expression as a single power of 10.
[size=150]The Sun is roughly [math]10^2[/math] times as wide as Earth. The star KW Sagittarii is roughly [math]10^5[/math] times as wide as Earth.[/size] [br][br]About how many times as wide as the Sun is KW Sagittarii? Explain how you know.
[size=150]Bananas cost $1.50 per pound, and guavas cost $3.00 per pound. Kiran spends $12 on fruit for a breakfast his family is hosting. Let [math]b[/math] be the number of pounds of bananas Kiran buys and [math]g[/math] be the number of pounds of guavas he buys.[br][/size][br]Write an equation relating the two variables.
Rearrange the equation so [math]b[/math] is the independent variable.
Rearrange the equation so [math]g[/math] is the independent variable.
[size=150]Lin’s mom bikes at a constant speed of 12 miles per hour. Lin walks at a constant speed [math]\frac{1}{3}[/math] of the speed her mom bikes. [/size]
Sketch a graph of both of these relationships.
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Information: IM 8.7.4 Practice: Dividing Powers of 10