Modeling: Numerical Data Mathematics I Common Core (S3511045) Points possbia 20 Name: Date: Your Assignment: F Friends Choosing a Group of Dogs Josue and Sara both walk dogs during the week. They each walk 10 dogs in the morming and 10 other dogs in the aftemoon. Select one of the groups to see how much the dogs in each group weigh. The heavier dogs usually have more energy and want to take longer walks than the smaller dogs. 1. Which dog walker did you select? Comparing the Morning and Afternoon Groups 2. Create frequency tables to represent the data for the morming and aftemoon dogs as two sets of data. Group the weights into classes that range 10 pounds. Add the intervals for each class in the weight column of the table. 3. Create a comparative stem and leaf plot for the morning and afternoon dogs. 0 1 2 3 4 5 4. Which gorup would you choose if yo wanted to take a longer walk? Why?

answer: .75 km

step-by-step explanation:

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

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step-by-step explanation:

the answer is $42.96

step-by-step explanation: