Answer:
40
Step-by-step explanation:
its 40 because bob is orange.
Answer:
25a-20
Step-by-step explanation:
15a+10a-20=
25a-20
Answer:
a. {(0, 7), (-1, 6)}
Step-by-step explanation:

subtract the equations

for
, substitute x = 0

for
, substitute x = 0

Answer:
I'm not sure but I think is 31.4
Step-by-step explanation:
multiply 15.70 twice