Provide an appropriate response.Simplify: 
What will be an ideal response?
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Simplify the expression. The result will be one of sin x, cos x, tan x, cot x, sec x, csc x.
A. tan x B. sec x C. cot x D. cos x
Provide an appropriate response.Explain how to add rational expressions with different denominators.
What will be an ideal response?
Solve the problem.The amount of highway mileage (in thousands of miles) U and R in urban areas and rural areas, respectively, can be modeled by the functionsU = 12.88t + 625.48 R = -13.38t + 3286.68 where t represents the number of years since 1980.i) Compare U with R when t = 0. What do these values mean in terms of highway mileage?ii) Compare the slopes of U and R. What do these slopes mean in terms of highway mileage?iii) Predict when the highway mileage in urban areas will equal the highway mileage in rural areas.
What will be an ideal response?
Simplify.-72
A. -14 B. -49 C. 49 D. 14