W10. 9.The price of robot vacuums is increasing linearly by $4.43 per month. Right now, they cost $320. (Round all dollar amount answers to the nearest cent.) (a) The pricepof robot vacuums can be described as a linear function of the timettin months from right now:p=mt+b. Findmandb. m= b= (b) How much will robot vacuums cost 18 months from now? Answer = $ _____ (c) When will robot vacuums cost $600? Round to two decimal places. Answer = _____ months from now