Determine whether the equation is an identity, contradiction, or conditional equation.4r + 9 = 17
A. Identity
B. Conditional
C. Contradiction
Answer: B
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Find the formula and limit as requested.For the function f(x) = 5x + 3, find a formula for the upper sum obtained by dividing the interval [0, 3] into n equal subintervals. Then take the limit as n?? to calculate the area under the curve over [0, 3].
A. 9 - 
; Area = - 
B. 9 + 
; Area = 
C. 9 + 
; Area = 
D. 9 + 
; Area = 
Evaluate the surface integral of the function g over the surface S.G(x, y, z) = x2y2z2; S is the surface of the rectangular prism formed from the planes x = ± 2, y = ± 2, and 
A. 512 B. 16 C. 768 D. 256
Sketch the graph of the polynomial function. Use the rational zeros theorem when finding the zeros.f(x) = 2x3 - 3x2 - 14x + 21
A. 
B. 
C. 
D. 
Solve the problem.Use a tangent function to estimate the grade resistance of a 
car travelling on a 2.1° grade. Round your answer to the nearest pound.
A. 198 lb B. 99 lb C. -4617 lb D. -2308 lb