Tomas works as an underwater photographer. He starts at a position that is 17 feet below sea level. He rises 6 feet, then descends 14 feet to take a photo of the coral reef. Enter and expression to find his position relative to sea level when he took the photo and evaluate the expression.

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,