Let $$y = \sqrt {18} \sin(3 \pi t + 180.8e ^{3} )$$
where t is given in minutes (min) and y has units of meters (m).

What is the amplitude? -- give units

What is the period? -- give units

What is the frequency ? -- give units
Hint: Frequency units are cycles per min or radians per min or sometimes revolutions per min. 1 cycles/min = 2pi rad/min = 1 rev/min. (See units for more details.)

What is the phase shift? -- This is also in radians or in cycles or in revolutions.

[NOTE: If needed, you can enter $\pi$ as 'pi' in your answers.]