Answer:
10%
Step-by-step explanation:
Percent change= New-Old |Old|× 100% percent change=81-90 |90| × 100= -9 90×100=-10%
Answer:
do the test then
Step-by-step explanation:
do the test then
Answer:
B
Step-by-step explanation:

M = {-0.5, 0.5}that is the plot