a. For what values of x does f(x)=7x-14 sin x have a horizontal tangent line? b....

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a. For what values of x does f(x)=7x-14 sin x have a horizontal tangent line? b. For what values of x does f(x)=7x-14 sin x have a slope of 7? a. Choose the correct answer below. 5 A. x=3+2k and 3 + 2k, where k is any integer O B. x= 3 +k, where k is any integer 5 3 C. x= and x= 3 D. There are no values of x where f(x)=7x-14 sin x has a horizontal tangent line. a. For what values of x does f(x)=7x-14 sin x have a horizontal tangent line? b. For what values of x does f(x)=7x-14 sin x have a slope of 7? a. Choose the correct answer below. 5 A. x=3+2k and 3 + 2k, where k is any integer O B. x= 3 +k, where k is any integer 5 3 C. x= and x= 3 D. There are no values of x where f(x)=7x-14 sin x has a horizontal tangent line.