Raise 9 to the 2nd power, then add the result to a

81

Step-by-step explanation:

9 to the 2nd power is 81

81 + a

Step-by-step explanation:

9 to the second power is 9 squared and add that to the variable 'a' you get that number plus a. So, the answer is 81+a

infinitely many solutions

step-by-step explanation:

we have been given the equation;

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

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

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

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

not sure but it may be b, as i said i'm not sure.