option D
rent = 25b + 10
where b is hours for boat rented
85 = 25b + 10
25 b = 75
b = 75/25 = 3
Answer:
the answer might be b. because if you multiply it by 4 it is 512.
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
5x=15
x=3
Answer:
a. a(b)c
b. a(a(b)c)c
d. a(a(a(a)c)c)c
Step-by-step explanation:
We are given the following in the question:

a. a(b)c
It is given b belongs to W.

b. a(a(b)c)c

c. a(abc)c
a(abc)c does not belong to W because we cannot find x in W such that a(abc)c belongs to W.
d. a(a(a(a)c)c)c

e. a(aacc)c
a(aacc)c does not belong to W because we cannot find x in W such that a(aacc)c belongs to W.