what is the sum of the polynomialsa. 4m + 3b. 4m – 24n + 3c. 30m – 5d. 30m – 24n – 5

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

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.

Which of the following is the shape of a cross section of the figure shown below