Final answer:
To solve the equation √5x + 1 = 9 for x, subtract 1 from both sides, square both sides to eliminate the square root, and divide both sides by 5.
Step-by-step explanation:
To solve the equation √5x + 1 = 9 for x, we need to isolate the variable x. Begin by subtracting 1 from both sides to get √5x = 8. Next, square both sides of the equation to eliminate the square root. This gives us 5x = 64. Finally, divide both sides by 5 to solve for x, which results in x = 64/5 or x = 12.8.
Learn more about Solving equations involving square roots