Icould use some i raised the points and will give brainliest

what is (hj) (x)?
h(x)=6-2x and j(x)= -4x

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.

Plz hurry evaluate the expression a+b where a=8 and b=19

Line wx is parallel to line yz. if m