Question

Using technology, we found that Juan’s investment account can be modeled by the function, c(x)=3x2-2x+10, in thousands of dollars. What was Juan’s initial investment?
A)$5
B)$10
C)$5,000
D)$10,000

Answer 1

Answer:

D) $10,000.

Step-by-step explanation:

We have been given a function $c(x)=3x^2-2x+10$, which represents Juan’s investment account in thousands of dollars. We are asked to find Juan's initial investment.

To find Juan's initial investment, we will substitute $x=0$ in our given function.

$c(0)=3(0)^2-2(0)+10$

$c(0)=3*0-0+10$

$c(0)=10$

Since the function gives Juan's investment in thousands of dollars, so Juan's initial investment would be $10\times \ 1,000=\ 10,000$, therefore, option D is the correct choice.

Answer 2

The function is $c(x)=3 x^{2} -2x+10$

Initial investment is given when $x=0$, so substituting this into $c(x)$ we have

$c(0)=3 (0)^{2}-2(0)+10$
$c(0)=10$

Hence, correct answer is B $10