Calculate the standard error from the following descriptive statistics:
s1 = 24, s2 = 21, n1 = 36, n2 = 49

s1 = 15.40, s2 = 14.80, n1 = 20, n2 = 23

s1 = 12, s2 = 10, n1 = 25, n2 = 25

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

Which statement best describes the polynomial

Write a story that matches with the expression 42x-5 pls hurry