exam Maths Puzzle Numerical Ability

Find the value of the discriminant for 9x^2+1=6x. Then describe the number and type of roots for the equation.

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exam Other Question

write in logarithmic form (1/2)^4 = 1/16 please help An investment of $1500 paid interest of $45 during a certain period.How much interest would an investment of $2000 invested at the same rate for the same length of time pay?