Question

A computer can sort x objects in t seconds, as modeled by the function below:

How many objects are required to keep the computer busy for exactly 9 seconds?

Answer 1

kinda missing the function below huh?

Answer 2

t=0.007x^2+0.003x

Answer 3

lol srry

Answer 4

kinda is

Answer 5

\[t=0.007x^2+0.003x\]solve \[9=0.007x^2+0.003x\]for \(x\)

Answer 6

what does the t stand for in the sentence

Answer 7

time in seconds apparently

Answer 8

howw would i solve that?

Answer 9

plg 9 in for x?

Answer 10

@aprillavender Notice it looks like a quadratic?

Answer 11

Nope plug in 9 for t. Which is done already, now we need to solve for x.

Answer 12

stupid decimals makes it hard

Answer 13

lol

Answer 14

\[9=0.007x^2+0.003x\] multiply by 1000 get
\[7x^2+3x=9000\]

Answer 15

so are there answer choses

Answer 16

then use the quadratic formula or cheat

Answer 17

@misty1212 You are smart.

Answer 18

nope free response

Answer 19

http://www.wolframalpha.com/input/?i=7x%5E2%2B3x%3D9000

Answer 20

so its 1?

Answer 21

Complete the square.