Simplify. Assume that all variables represent positive numbers. Use "sqrt(x)" for and "root(x)(y)" for /y. a. x b. 27x = c. 48a Question 5 For the function f(x) = 2x, find f(x + h) - f(x) h 1 pt 1 Details 1 pt 1 Details One car travels 180 miles in the same amount of time it takes a second car traveling 6 miles per hour slower than the first to go 156 miles. What are the speeds of the cars? The speed of the cars are miles per hour. Question 6 Question 7 1 pt 1 Details Map Reading. A map is drawn so that every 3.2 inches on the map corresponds to an actual distance of 80 miles. If the actual distance between the two cities is 480 miles, how far apart are they on the map? The two cities are inches apart on the map.