If the function rule is to multiply by 4, and an output value is 8, what is the input value?

a. 32
b. 16
c. 8
d. 2

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

10% of 1,900,000. show me how you got the answer

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18