Pacey's computer is infected with a virus. the number of files the virus corrupts doubles every 8 minutes. the following expression represents the number of files corrupted after x minutes.

Step-by-step explanation:

Pacey's computer is infected with a virus. The number of files the virus corrupts doubles every 8 minutes.

That means at every 8 minutes interval sequence becomes 8, 8 × 2, 8 × 2 × 2,.....

So the sequence is a geometric sequence.

Explicit formula of geometric sequence is

When = xth term

= first term

x = number of term

and r = common ratio

Here = 8 and r = = 2

So expression representing the number of files corrupted will be =

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.

it is x=-4

step-by-step explanation: