At noon a radioactive sample decays at a rate of 4,000 counts per minute. at 12: 30 pm, the decay rate has decreased to 2,000 counts per minute. the reduced decay rate at 1: 30 pm, is

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step-by-step explanation:

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )