In a poll conducted by a certain research center, 824 adults were called after their telephone numbers were randomly generated by a computer, and 10% were able to correctly identify the president. Identify the type of sampling used.

Valentino starts with a population of 1,500 amoebas that increases 35% in size every hour for a number of hours, h. the expression 1,500(1+0.35)h finds the number of amoebas after h hours. which statement about this expression is true? a. it is the initial population raised to the growth factor after h hours. b. it is the sum of the initial population and the percent increase. c. it is the sum of the initial population and the growth factor after h hours. d. it is the product of the initial population and the growth factor after h hours.

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have