Simplify the expression.
?
What will be an ideal response?
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Fill in the blank with one of the words or phrases listed below. 
An angle that measures 90° is called a(n) 
angle.
A. straight B. right C. supplementary D. complementary
Divide.8531 ÷ 46
A. 185 B. 185 R 21 C. 188 R 5 D. 188 R 38
Use the REGRESSION feature on a graphing calculator.As the number of farms has decreased in South Carolina, the average size of the remaining farms has grown larger, as shown below. 
Let x represent the number of years since 1900. Use a graphing calculator to fit a quadratic function to the data. Round your answer to five decimal places.
A. y = 0.02536x3 + 1.21114 + 102.58741 B. y = 0.02536x2 + 1.21114 x + 102.58741 C. y = -.00114x3 + 0.19605x2 - 5.29775 + 143.55245 D. y = 0.02536x3 + 1.21114 x + 102.58741
Solve the problem.The logistic growth model 
represents the population of a species introduced into a new territory after t years. When will the population be 60?
A. 14.95 yr B. 3 yr C. 16.07 yr D. 1.87 yr