Solve the system by substitution.3x - 3y = 23x + 3y = 2
A. 
B. 
C. 
D. ?
Answer: B
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Find the intersection.x + y + z = -6, x + y = -8
A. x = -t, y = -8 + t, z = 2 B. x = -t, y = -8 + t, z = -2 C. x = t, y = -8 - t, z = 2 D. x = -1, y = 1 - 8t, z = 2t
Identify the intercepts.
A. (0, -5) B. (5, 0), (-5, 0) C. (5, 0), (-5, 0), (0, 0) D. (5, 0), (-5, 0), (0, -5)
After the economy softened, the sky-high office space rents of the late 1990s started to come down to earth. The function 
gives the approximate price per square foot in dollars, 
, of prime space in Boston's Back Bay and Financial District from 1997 (
src="https://sciemce.com/media/3/ppg__cognero__4.4_Optimization_I__media__22c513d7-a1e5-43f4-9d7c-6c5f9da6a323.PNG" style="vertical-align:middle;" />) through 2000, where
? 
.
?What was the highest office space rent during the period in question?Hint: Use the quadratic formula.
?
A. $54.40 per sq ft
B. $54.47 per sq ft
C. $54.19 per sq ft
D. $54.26 per sq ft
E. $54.33 per sq ft
Classify the polynomial as constant, linear, quadratic, cubic, or quartic, and determine the leading term, the leading coefficient, and the degree of the polynomial.h(x) = 2.3x3 + 14x2 - x + 
A. Linear; -x; -1; 1 B. Quartic; 14x2; 14; 4 C. Cubic; 2.3x3; 2.3; 3 D. Quadratic; 14x2; 14; 2