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Which of the following is true regarding the solution to the logarithmic equation below?
log2(x+11)=4
X+ 11 = 24
X+ 11 = 16
X=5
X= 5 is not a true solution because logs (16) 2
X= 5 is not a true solution because logs(16) 4
X= 5 is a true solution because log (16) - 4
X= 5 is a true solution because log (16) = 2

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling