Find the value of c and ab if b is between a and c, ab=2r, ac=-5and bc=7

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.

Which of the following is correct interpretation of the expression -4+13

One positive number is 9 more than twice another. if their product is 95, find the numbers