exam Maths Puzzle Numerical Ability

Discuss these functions and their graphs with your classmates.
y=e^x
log x^e

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exam Other Question

Roberto invested some money at 7% and then invested $5000 more than twe the amount at 9%. His total income for two investments was $3950. How much was invested at 9%? i need help solving this for x

2(x-5)^2=3