If 3x + 7 = x2 + M = 7x + 5, what is the value of 120% of M?
Select the correct option.
A) 8.9	B) 9.9	C) 9.98	D) Cannot be determined	E) None of these
If 3x + 7 = x2 + M = 7x + 5   ie, 3x + 7 = 7x + 5   or, 4x = 2 ∴ x = 1⁄2   and 3x + 7 = x2 + M   or, 1⁄4 + M = 3⁄2 + 7 ⇒ M + 1⁄4 = 8 + 1⁄2   ∴ M = 81⁄4   Answer 9.9
<result>B</result>
If 3x + 7 = x2 + M = 7x + 5, what is the value of 120% of M?