What is the nth term of 1,2,4

Step-by-step explanation:

r=2/1=2

a_{n}=a_{1}r^{n-1}

a_{n}=1(2)^{n-1}

=2^{n-1}

step-by-step explanation:

it's is b

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions