The quotient is a rational number.
The probability would be 1 out of 840.
This is a permutation problem. You have to determine the number of ways for each choice and multiply them together.
For the first choice, there are 7 states, then 6, then 5, and finally 4 choice for 4th spot.
7 x 6 x 5 x 4 = 840
$30
You need to add $4 to $26 since the tomatoes were 26 dollars and she received 4 back
*use calculator to get final product
*x is not equal to 13.490 it is an estimation so use (≈)
The period of secx is 2π (identical to the period of cosx), so 4π would be a good viewing window (from -2π to 2π, or if you're graphing it, from -π/2 to 3π/2)