Maradee works at Cox's Jewelers for $7.50 per hour with time-and-a-half for all hours over 40 in a week. Thus, her weekly salary is given by s(h) - 11.25h + 300
where h is the number of overtime hours and S(h) is her weekly salary.

(a) Find S(4.5). (Round your answer to two decimal places)

(b) One week, Maradee worked 45 hours. Find her salary for that week

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

How do you use the elimination method for this question? explain, because i really want to understand!

If a is a nonzero real number then the reciprocal of a is