What does ^ mean in math?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.