Daniel measured the diameter of the base of a candle. If the diameter of the candle measures 7 cm, what is the measure of the radius?

Me. i can't figure out this question. give an explanation too. .

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?