In 3 days, a traffic engineer counted 48 cars stopped at a traffic light for over 4 minutes. if an equal number of cars were stopped each day, which unit rate describes the situation? 4 cars per day 12 cars per day 16 cars per day 41 cars per day

(60 points) explain this in detail

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15