If f(x) = 2x ­- 4 and g(x) = x^2 + 3, find each value
(f -­ g)(x)

(f • g)(x)

(f-g)(x) = f(x) - g(x)

= 2x - 4 - (x² + 3)

(f-g)(x) = -x² + 2x - 7

(f•g)(x) = 2g(x) - 4

= 2(x² + 3) - 4

fg(x) = 2x² + 6x - 4

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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