exam Maths Puzzle Numerical Ability

Lane invested $14000 part at 15% and part at 2%. If the total interest at the end of the year is $1060, how much did she invest at 15%. Please help. What formula could I use?

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exam Other Question

sqrt (3)/ sqrt (6)-1 - sqrt (3)/ sqrt (6)+ 1

After working it out, I got sqrt (3) - sqrt (3) for my answer. I don't think I did it right. Can you please help?
i am trying to help my daughter with her homework. i cannot solve the problem (-3,6), (3,0); y=x+2. i have to write in slope intercept form the equation of this line passing through the two points.