``solve: sqrt (r - 1) + 5 = 2

a) (10)
b) (8)
c) (50)
d) none or 0''.

a

Correct.

thanks jen

To solve the equation sqrt(r - 1) + 5 = 2, we need to isolate the square root term and then solve for r.

Step 1: Subtract 5 from both sides of the equation:
sqrt(r - 1) = 2 - 5
sqrt(r - 1) = -3

Step 2: Since the square root cannot be negative, the equation has no real solution.

Therefore, the answer is d) none or 0.