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

a local business was looking to hire a landscaper to work on their property. they narrowed the choices to two companies. flourish landscaping company charges a

question #3) 3 times of 5 feet inch=____feet ____ inches

how many 1/5-cup servings are in 3/4 of a cup of ice cream?

What factor creates the most difficulty in predicting the possible consequences of different control methods? a. species interactions c. habitat changes b. feed

Does technology always follow science? Explain.

a recipe calls for 6 cups water and 4 cups of flour.if the recipe is increased,how many cups of water should be used with 6 cups of flour

how to solve 10m-2/5=9 3/5

How does the scientific process generally begin

Which of these will likely be included in the text of a research paper when embedding a direct quotation? Author's last name Quotation marks Parenthetical docum

A major unit of the genetic code is called a(n) _____.