Indicate whether the statement is true or false.When graphing a linear inequality, the origin can always be used as a test point for determining which side of a boundary line should be shaded.
A. True
B. False
Answer: B
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Solve the problem. Round results to an appropriate number of significant digits.When sitting atop a tree and looking down at his pal Joey, the angle of depression of Mack's line of sight is 
If Joey is known to be standing 26 ft from the base of the tree, how tall is the tree?
A. 38 ft B. 40 ft C. 42 ft D. 36 ft
Find the real solutions, if any, of the equation. Use the quadratic formula and a calculator. Express any solutions rounded to two decimal places.x2 + 
x - 3 = 0
A. {-2.8, -1.07} B. {-2.8, 1.07} C. {-2.8, 2.8} D. {-1.07, 2.8}
Fill in the blank with one of the words or phrases listed below. 
A combination of operations on variables and numbers is called a(n) 
.
A. equation B. evaluating the expression C. addition D. algebraic expression
Determine whether the two pairs of numbers are proportional.2, 9 and 4, 18
A. No B. Yes