Bill wants to rent a car. rental company a charges $35 per day plus $0.10 per mile driven. rental company b charges $25 per day plus $0.15 per mile driven. after how many miles driven will the price charged by each company be the same?

You gotta pick number (Miles) that give you higher figure for 0.15 and lower figure 0.10 so that the actual answer comes same after adding them with per day charges.

Let's pick 100 miles for A and B,

A, 0.10x 100 = $10
= ($35 + $10)
=$45

B, 0.15 x 100 = $15
= ($25 + $15)
=$40
Well, it ain't giving us same charge, so we should go higher miles

Let's take 200 miles this time.

A, 0.10x 200 = $20
= ($35 + $20)
=$55

B, 0.15 x 200 = $30
= ($25 + $30)
=$55

after 200 miles.

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 *_*