Rewrite the expression without using grouping symbols. 8 (x-23) a. 8x - 31 b. 8x - 23 c. 8x - 8 * 23 d. 8 + 8 * 23

Ineed if you could explain and give me the answer you! this needs done

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points