Addison took a total of 21 quizzes over the course of 7 weeks. After attending 8 weeks of school this quarter, how many quizzes will Addison have taken in total? Assume the
relationship is directly proportional.

the difference of two squares is a special form that has a factorization worth memorizing.

a² - b² = (a - b)(a + b)

your equation can be factored as

x² - 16 = 0

(x - 4)(x + 4) = 0

the zero product rule tells you the solutions are the values of x that make these factors zero: x=4, x=-4.

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b-548 in2

c-sqr 54

d-this cannot be determined from the scatterplots

a-1

c- y=2x+1

a- 15/31