Toby bought 9 postcards during 3 days of vacation. how many days will today have to spend on vacation before he will have bought a total of 18 postcards?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Powerful women's group has claimed that men and women differ in attitudes about sexual discrimination. a group of 50 men (group 1) and 40 women (group 2) were asked if they thought sexual discrimination is a problem in the united states. of those sampled, 11 of the men and 19 of the women did believe that sexual discrimination is a problem. if the p-value turns out to be 0.035 (which is not the real value in this data set), then at = 0.05, you should fail to reject h0. at = 0.04, you should reject h0. at = 0.03, you should reject h0. none of these would be a correct statement.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x