Astore in campbell purchased a crystal sculpture at a cost of $100 and marked it up 100%. later on, stefan bought the crystal sculpture. if the sales tax in campbell is 9%, how much did he pay in all?

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°