Answer:
B
Step-by-step explanation:
x = y-4x^2 can be rearranged to get y = 4x^2 + x, which is a function
50%
the percent of decrease from 10 to 5 is 50%
When 10 is decreased to 5:
10-5= 5
5 is half of 10.
1/2 as a percent is 50%
