Please solve this, i will mark brainliest

Step-by-step explanation:

Let's write the left hand side as a negative power, and 9 as a power of 3:

At this point, for the equality to still stand, the exponents have to be equal:

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.