Ataxi charges a flat fee of 4.00 plus 2.25 per mile how much will it cost to go 8.7 miles

Y represents your total cost and x the number of miles you travel. So y=x2.25+4; 8.7*2.25=19.575=4= 23.575. To get rid of the 5 you round up since it's a 5 (5 and above give it a shove 4 or less stays at rest) so your total cost would be $23.58. 

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*