A ticket selling company is keeping track of how many tickets they have remaining for a concert as a function of the number of minutes since they began selling them. The data is shown in the table below. Number of minutes, x - 5 10 15 20 25 30
Tickets remaining, y - 6822 6180 5722 5008 4195 3890

(a) Find a linear regression equation, in the form y = ax + b, that best fits this data set. Round each parameter to the nearest whole number.

(b) According to this model, would tickets still be on sale after an hour and a half? Justify your answer.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane