For Exercises 1 - 2, identify each type of sample as representative or biased. Explain your reasoning in a sentence. 1. Thomas wants to know which sport most students in seventh grade prefer. He asks the 30 seventh grade students in his karate class which sport they like most.

2. The librarian wants to know which type of novel she should order for students to read. She randomly selects 50 students and asks each one to name their favorite type of novel.

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

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5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116