Robert is running on a track that is 3 3 4 miles long. He has run 1 2 5 of a mile. How many more miles are there until Robert reaches the end of the track?
A) 2 7/ 20 miles
B) 2 5 /9 miles
C) 3 7 /20 miles
D) 3 5 /9 miles

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)