Choose the correct simplification and demonstration of the closure property given: (2x3 + x2 − 4x) − (9x3 − 3x2).

−7x3 + 4x2 − 4x; may or may not be a polynomial
−7x3 + 4x2 − 4x; is a polynomial
11x3 − 2x2 − 4x; may or may not be a polynomial
11x3 − 2x2 − 4x; is a polynomial

Ataxi company charges $2.25 for the first mile and then $0.20 per mile for each additional mile, or f = $2.25 + $0.20(m - 1) where f is the fare and m is the number of miles. if juan's taxi fare was $6.05, how many miles did he travel in the taxi? if juan's taxi fare was 7.65, how many miles did he travel in taxi

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48