John surveyed 30 members of a country club. he found that 9 members had signed up for tennis. what is the experimental probability that the next member surveyed will sign up for tennis? a. 0.3 b. 0 c. 0.7 d. 1

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?