What is the value of "c" in the quadratic equation 3x^2 5x 7 = 0?

What is the range? can’t seem to find it out

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)