exam Maths Puzzle Numerical Ability

Rewrite each function to make it easier to graph using a translation. Describe the graph.
y = (cubert 64x + 128) -4

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exam Other Question

P (t) = 1540/1+37.5e^-0.32t = represents the pop. of bacteria in a culture tube after t hours.

Find:
a. The initial number
b. The number after 4 hours
c. The carrying capacit 8x+2y=-10
4x+y=-5

This cannot be solved, as the 1st equation is the same as the 2nd multiplied. If you graph this, it will be the same line. No solution is possible.