An infectious strain of bacteria increases in number at a relative growth rate of 200% per hour. When a certain criti-
cal number of bacteria are present in the bloodstream, a
person becomes ill. If a single bacterium infects a person,
the critical level is reached in 24 hours. How long will it
take for the critical level to be reached if the same person is
infected with 10 bacteria?

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

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?