Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.x2 + y2 = 13.85x = 3y - 1
A. (-3.41, -1.47), (3.62, 0.87)
B. (-11.26, -3.42), (11.06, 4.02)
C. (1.47, 3.42), (-0.87, -3.62)
D. (3.42, 1.47), (-3.62, -0.87)
Answer: D
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Use the appropriate addition formula to find the exact value of the expression.cos 
A. 
+ 
B. 
C. 
- 
D. 
Find v ? u.v = 3i - 9j and u = -8i + 3j
A. -5i - 6j B. -51 C. -24i - 27j D. 3
Graph the function on a grapher. Then use the grapher to find the x- and y-intercepts. Round to the nearest hundredth if necessary.f(x) = 0.68x2 + 1.57x + 15.76
A. No x-intercepts, (0, 15.76) B. (15.76, 0), no y-intercepts C. (3.80, 0), (-6.11, 0), (0, 15.76) D. (3.80, 0), (0, 15.76)
Solve the problem.Best Office Machines spent $87,860 this year on health insurance alone. If total sales were $621,400, what percent of total sales was spent on health insurance? Round to the nearest tenth of a percent.
A. 1.4% B. 14.1% C. 71.0% D. 7.1%