exam Maths Puzzle Numerical Ability

solve
5y-2<7y-3
Use set builder notation to describe the complete solution
{y/y_ _ }

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can someone please help me with this problem:

Evaluae the function at the given value of the independent variable and simplify.

f(x) = x^3 + 3 / x^2 - 3; f(3)

a. 2
b. 10/3
c. 5
d. 9/2
What are the values of the indices i and j for the element that is in the fifth column and fourth row?


a. 4, 5, respectively
b. 5, 4, respectively
c. Either 4, 5 or 5, 4; they are interchangeable
d. There are no elements in matrices