exam Maths Puzzle Numerical Ability

I need help with this problem please
factor each expression
y2-81

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exam Other Question

Hi,

I need help with the following:

1. From the given polynomials, identify the polynomials of degree one.

a. 311y - 5 - 43y A grain-storage warehouse has a total of 30 bins. Some hold 20 tons of grain each, and the rest hold 15 tons each. How many of each type of bin are there if the capacity of the warehouse is 510 bins?