A certain isotope has a half-life of 140 years. How much of a 570 mg sample remains after 162 years? When you calculate your k-value, round to 4 decimal places.
Round your final answer to the nearest whole number.
mg

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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. : )