One of the x-intercepts of the function y = f(x) is 4. Choose the expression which COULD represent f(x).
A) f(x) = (x + 7)3
B) f(x) = (x + 5)2(x - 4)
C) f(x) = (x + 6)(x - 3)2
D) f(x) = (x + 4)(x + 3)(x - 7)

21

step-by-step explanation:

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solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.