book Maths Puzzle Numerical Ability

I have two word problems which I cannot decipher, please help?

1. Catrinas investment of $16,000 in an emerging market fund grew to $25,000 in 2 years. Find the average annual

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book Other Question

I am inventing a new cookie recipe. I'd like the recipe to contain both walnuts and gourmet chocolate chip chunks. Walnuts sell for $3.00 per pound and gourmet chips sell for $1. given these points, write the equation of the line that contains them.

x y
0 380
5 445
10 510
15 575
20 640
25 705