Question

For what values of the variable does the following expression make sense:
(squareroot) 1+3a/25

Answer 1

a ≥ -1/3

Explanation:

The square root must be greater than or equal to zero

sqrt(1+3a /25) ≥ 0

Square each side

(1+3a)/25≥ 0

Multiply each side by 25

1+3a≥0

Subtract 1

3a ≥ -1

Divide by 3

a ≥ -1/3