Add rm and ms together to get rs
rs = 3x + 1 + 4x - 2
rs = 7x - 1
rs = 7x - 1 is your answer
hope this helps
37.5 grams of contaminants will remain after 4 hours.
Since the first equation says y= x-4, substitution that for the y value in x + y = 6
x + x - 4 = 6
add up the x’s to get 2x - 4 = 6
add 4 to both sides to get 2x = 10
divide both sides by 2 to get x = 5
the x value is 5
then, to figure out the y value, substitute 5 for the x value in y = 5-4
the y value is 1
final answer: x = 5 and y = 1
hope this helped!!
<span>Use point slope form which is y-y1=m(x-x1)</span>
