Question

Which expressions are equivalent to 4b

Choose all answers that apply:

a. b+2(b+2b)

b. 3b+b

c.2(2b)

Answer 1

c and b are your answers

Answer 2

b. 3b+b

c.2(2b)

Explanation:

Option a is

b+2(b+2b) = b+2(3b) Adding the like terms b and 2b

=b+6b

=7b

Option b is :

3b+b = 4b (Like terms can be added)

Option c is

2(2b) = 4b. [ 2x2=4]

OPtions b and c both equal 4b.