Perform the indicated operation.-2.1 + (-7.7)
A. -5.6
B. 9.8
C. 5.6
D. -9.8
Answer: D
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Find the indicated probability.The following table displays the number of siblings for students at one middle school. Find the probability that a randomly selected student in the school has 2 siblings. Round your answer to the nearest thousandth. 
A. 0.287 B. 0.205 C. 0.217 D. 0.125
Decide whether the number is prime or composite.30
A. Prime B. Composite
Use the graph of the function to find the following: a. the domain and range of the function; b. the intercepts, if any; c. the intervals on which the function is increasing, decreasing, or is constant; d. whether the function is even, odd, or neither.
What will be an ideal response?
Find the least squares regression line y = ax + b for the points
by solving the system of linear equations for a and b.
Points: (1, 10), (3, 8), (5, 4), (6, 5)
?
Round a, b to two decimal places.
e
A. y = -0.8x + 3.51 B. y = 11.14x- 1.17 C. y = 5.81x + 11.14 D. y = -5.19x + 3.51 E. y = -1.17x + 11.14