Which equation has exactly one solution? *

A)3(x + 1) = 3x + 2
B)3(x + 1) = 3x + 3
C)3x = x + 2x
D)3x = x + 2

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Equation for the calculation double 2 and then add 5