exam Maths Puzzle Numerical Ability

Simplify by removing the factors of 1.

3z^9/10z^5

This is to look like a fraction.

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exam Other Question

Solve the following system of linear inequalities by graphing

3x-y<2
x+y>2

Please help solve this
4. The line

y = 0. 15x + 0.79.

represents an estimate of the average cost of gasoline for each year. The line

0.11 x - y = - 0.85

estimates the price of gasoline in