Decide whether 
is positive, negative, or zero.
Positive
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Add the given vectors by using the trigonometric functions and the Pythagorean theorem.A = 28, ? = 211 °B = 11, ? = 201 °
A. R = 7, ? = 208° B. R = 39, ? = 242° C. R = 39, ? = 28° D. R = 39, ? = 208°
Solve the problem.The approximate monthly average temperatures in degrees Fahrenheit in a certain city can be approximated by the function f(x) = -0.005x6 + 0.31x4 - 6.14x2 + 77with domain {x|-6 ? x ? 6}. Here x represents the month with 
corresponding to July. In most cities average temperatures decrease from July to December. What month violates this trend in this particular city?
A. August B. September C. October D. November
Find f[g(x)] and g[f(x)].f(x) = 
; g(x) = 6x2 + 5
A. f[g(x)] = 
- 3
g[f(x)] = 6x + 2
B. f[g(x)] = 6x - 13
g[f(x)] = 
C. f[g(x)] = 
g[f(x)] = 6(x - 3)2 + 5
D. f[g(x)] = 
g[f(x)] = 6x - 13
Find the x-intercept for the linear equation 
.
A. 
B. 
C. 
D. 