Abc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of b after both reflections? a. (-7, -1)b. (-7, 1)c. (7, 1)d. (7, -1)

The correct option is C

Step-by-step explanation:

From the given figure it is noticed that the coordinates of point B are (-5,-7).

If a figure is reflected across x = 1, then

So the coordinates of B after reflection across x = 1 are

If a figure is reflected across y = -3, then

So the coordinates of B after reflection across x = 1 followed by reflection across y= -3 are

Therefore the coordinates of the reflection image of B after both reflectionsthe are (7,1) and option C is correct.

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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