Hello May some one please help on getting the answer for number 21

x = 3/2

Step-by-step explanation:

9^x = 27

Rewrite both terms as powers of 3

9 = 3^2   and 27 = 3^3

3^2^x = 3^3

We know that a^b^c = a^(b*c)

3^(2x) = 3^3

The bases are the same, so the exponents need to be the same

2x= 3

Divide by 2

2x/2 = 3/2

x = 3/2

$127.00

Step-by-step explanation:

Step 1: Line 81.75 + 45.25 up with 81.75 on top and 45.25 underneath.

Step 2: add the two 5’s (making 10) put the 0 underneath that and carry the one over to the left. ( 7+2+1 =10) then put your decimal point after the zero. repeat process (5+1+1=7) than add up 8+4 =12