exam Maths Puzzle Numerical Ability

Complete the following for each function y=f(x)
a. State the x-intercepts of the graph and whether the graph crosses or just touches the x-axis at each x-intercept.
b. State the

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exam Other Question
The equation x^3 = 9 + 46i where i = sqre root of -1 has a solution of the form a + bi where a and ba are integers. Find a + b.

I have this problem down to the system: a^3 - 3ab A school had 900 students at the start of a school year. If there is
an enrollment increase of 7% by the beginning of the next year, what is the new
enrollment?
Would this be 900 x .07= 63 = 963?