mason has 49 cent stamps, 20cents stamps and 5 cent stamps worth $23.55. he has a total of 56 stamps. the number of 3 cent stamps is nine more than the number 20 cent stamps. how many of each does he have

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

If f(x)=x+7 and g(x)=1/x what is (fog)(x)