Angle A is circumscribed about circle O.
What is the measure of ZA?
D
48
A
B

Ashopper bought a watermelon a pack of napkins and some paper plates in his state there was no tax on food the tax rate on non-food items is 5% the total for the three items he bought was 825 before tags and he paid $0.19 in taxes how much did the watermelon cost

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

I'm confused on this could anyone me and show me what i need to do to solve it.