140k views
2 votes
Find the value of f(–3) and g(3) if f(x) = –6x + 3 and g(x) = 3x + 21x^–3.

f(–3) = 21 g(3) = 9.78
f(–3) = –18 g(3) = –9.78
f(–3) = –3 g(3) = 30.04
f(–3) = 15 g(3) = 8.22

2 Answers

4 votes

Answer:

f(-3)=21

Explanation:

Plug in -3 for x. -6•-3=18. 18+3=21.

User Thays
by
8.2k points
4 votes

Answer:

f(–3) = 21 g(3) = 9.78

Explanation:

Given functions,


f(x) = -6x + 3-----(1)


g(x)=3x+21x^(-3)-----(2)

Put x = -3 in equation (1),


f(3) = -6(-3) + 3 = 18 + 3 = 21

Put x = 3 in equation (2),


g(3) = 3(3) + 21 (3)^(-3)=9 + (21)/(3^3)=9+(21)/(27)=9.777778\approx 9.78

Hence, first option is correct.

User Akhilesh Kamate
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.