Determine the solution and indicate the restrictions on the variable.

Mathematics

1 answer:

cupoosta [38]2 years ago

5 0

Answer:

Step-by-step explanation:

Subtract 20 from both sides:

$-\sqrt{9-8x} =-15$

Divide both sides by -1:

$\sqrt{9-8x} =15$

Square both sides:

$9-8x=255$

Subtract 9 by both sides:

$-8x=216$

Divide both sides by -8:

$x=-27$

That means that either a or b is correct and since 9/8 is positive that means it needs to bee less than 9/8 so the correct answer is B

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