exam Maths Puzzle Numerical Ability

Reading problem: Phoebe Small still has 35 pages of history to be read after she has been reading for 10 minutes, and 5 pages left after she has been reading for 50 minutes. Assu

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Still having a little trouble with linear cost functions. Question is:
A small family bakery specializes in baking cheesecakes. The fixed cost of production is $245, the marginal
Simplify using properties of exponents
(2x^6y^3)^-2