Question

Given f(x)=2x+3 and g(x)=x^2-5, find the following

Answer 1

a) 13

b) 0

c) 1

d) 4/9

What is function?

An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable)

Given:

f(x)= 2x+3 and g(x)= x²-5.

a) (f+ g)(3)

= f(3)+ g(3)

= 2(3)+3 + (3)²-5

=6+3+9-5

=13

b)  (f-g)(4)

= f(4)- g(4)

= 2(4)+3 - (4)²+5

=8+3-16+5

= 0

c) (fg)(-2)

= f(-2)*g(-2)

=[ 2(-2)+3][(-2)² -5 ]

=(-1)(-1)

= 1

d)  (g/f)(3)

= g(3)/f(3)

= 3²-5/ 2(3)+3

= 4/9

Learn more about this concept here:

brainly.com/question/93497

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