700 because 10 times 20 is 200 and 500 plus 200 is 700.
You have two equations.
since the second is already isolated, sub in x-4 for every y in equation 1 so that
expand, collect like terms, factor to find x, then plug x value back into original equation to find y
Answer:
b. (-8, -2)
Step-by-step explanation:
Reflection across the x-axis
(x, y) ---> (x, -y)
B'(- 8, 2) ---> B( - 8, -2)
That's a 33% increase.
I calculated this using the formula:
Where n = the new value (16 in your question), o = the old value (12 in your question) and the result is outputted as a percent increase. You can check that this is correct by finding 33% of 12, adding the result to 12, and checking that the result equals your "new" number.
Note that 33% is only an approximation as your question requires a number rounded to the nearest whole.