An employee in Sri Lanka is paid a salary of 42280 rupees which is of allowance of 2280 rupees, hence he must pay 15% to EPF employment prudent fund and 10% to ETF employment trust fund. Find out: a) The amount to pay to EPF
b) The amount to pay to ETF
c) The remaining salary after paying EPF and ETF.

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

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?