Please anwer proprely ,thanks

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2