Simplify the rational expression: x+3/30x^3-12x^2 - x-1/30x^3-12x^2

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.