Which of the following sets could be the sides of a right triangle? {2, 3, square root of 13 } {2, 2, 4} (1, 2, square root of 3}

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.

Rewrite the following without an exponent. (5/8)-1

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.