BritanyJernigan BritanyJernigan

04-06-2015
Mathematics

contestada

If f(3) = 15 and f(5) = 45, which of the following could be f(x)?
a. 4x + 3
b. 2x² – 2x
c. 2x² - x
d. 2x² - 5
e. 5x²

Respuesta :

Panoyin Panoyin

04-06-2015

f(x) = 2x² - x
f(3) = 2(3)² - 3
f(3) = 2(9) - 3
f(3) = 18 - 3
f(3) = 15

f(x) = 2x² - x
f(5) = 2(5)² - 5
f(5) = 2(25) - 5
f(5) = 50 - 5
f(5) = 45

The answer is C.

Answer Link

Otras preguntas

2x-9 x=3 ..............................

Analyze the importance of the fourteenth amendment in incorporating the bill of rights

Water’s molar mass is 18.01 g/mol. The molar mass of glycerol is 92.09 g/mol. At 25°C, glycerol is more viscous than water. Which substance has the stronger int

what is 2 quarters and one nickel

Please help me with probability!

Worth 50 points! Which of the following does not describe one of freuds believes 1.the unconscious mind is triggered by powerful instincts and desires 2. The

Which of the following is not a hardship in Africa? political unrest lack of natural resources not enough land extreme weather

A neutral reply is a. less effective when it follows the direct organizational plan. b. more effective when it follows the indirect organizational plan. c. sent

How do you do question 22? It is a Trig question.

I need helps pls help