Determine whether the sample is biased or unbiased. Explain how you know. If the sample is biased, give an example of an unbiased sample for the situation. You want to estimate the number of students in your school who play a musical instrument. You survey the first 15 students who arrive at a band class.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis