Answer:
360
Step-by-step explanation:
Given
Digits: 0 to 5
Required
Number of 4 digit passcode that can be generated.
First, we need to get the number of usable digits.
Digits 0 to 5 = 0,1,2,3,4,5
Number of digits = 6
To make a 4 digit passcode;
The first digit can be taken from any of 6 digits
The second digit, any of the remaining 5 digits
The third digit, any of the remaining 4 digits
The fourth digit, any of the remaining 3 digits
Number of passcode = 6 * 5 * 4 * 3
Number of passcode = 360
We know from the given that the person earns 250 dollars
for every complete doll that he makes. Since he was only able to make 7 dolls
completely, therefore the total money he earned was:
<span>total money = $250 * 7 = $1,750</span>
Put the second equation so it's in y= form, it should be the same :)
The exact answer would be <span>392.78
An estimated value could be either 390 or 393</span>
