Write the quadratic function f(x) = 3(x + 1)(x – 7) in standard form. A)

f(x) = x2 – 18x – 21

B)

f(x) = 3x2 – 18x – 21

C)

f(x) = x2 – 6x – 7

D)

f(x) = 3x2 – 6x – 7

B

Step-by-step explanation:

Given

f(x) = 3(x + 1)(x - 7) ← expand the factors using FOIL

     = 3(x² - 6x - 7) ← distribute the parenthesis

      = 3x² - 18x - 21 → B

42%

step-by-step explanation:

we know,

total people = 60

total males = 25

percentage of males

= 25/60 × 100

= 25/6 × 10

= 25/3 × 5

= 125 / 3

= 41.

rounding of = 42%

happy to

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