exam Maths Puzzle Numerical Ability

Thank you so much for your help! Can you please help me solve the equation....

42x + 4x+1 – 6 = 0

(the exponents are the 2x and x+1)

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exam Other Question
Lynn Ogen invested some money at 9% interest and $100 less than that at 7% interest. Her total annual interest was $73. How much did she invest at 7% interest? 1. expand log:(3square of x devided by 5) closed in parethesis.

2.Write as single Logarithm: 4 log x + log y - 3 log2

3. Solve for x: ln x=4.2

Thank you so much