Can someone me with both of the part i don’t know how to find the answer

1. To find the sales tax rate you can set up the equation:

1200x = 72; divide both sides by 1200
x = 0.06

The tax rate is 6%.

2. 6% of 2500
0.06 x 2500 = $150

For Part A, the answer is d.

3. 6% of x is $108
0.06x = 108; divide both sides by 0.06

x = 1800

The answer for Part B is letter d.

The answer is idk yo