For the data set below, which of the following is true? {18, 17, 23, 20, 21, 22, 19} a. the range is 5. b. the mean is 20. c. the interquartile range is 6. d. the median is 24.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Nine more than four times a number is the same as one less than twice the number. find the number?