Can anyone answer this question for me its on my final exam. the question is, the line y=2x-4 is dilated by a scale factor of 2 and centered at the origin. which equation represents the image of the line after the dilation.
a) y=2x-8
b) y=2x-2
c) y=4x-4
d) y=4x-8

Which graph represents the function g(x) = |x + 4| + 2?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?