Answer:
a) Sinusoidal functions are y = a sin [b(x-h)] + k (or)
y = a cos [b(x-h)] + k
Where a is amplitude a= (max-min)/2=(16-2)/2=7
period p= 2π/b
b=2π/30
Horizontal transformation to 10 units right h=10
k= (max+min)/2=(16+2)/2=9
h = 7 cos [π/15(t-10)]+ 9
b) t=10min=600 sec
substitue in the above equation
h=5.5m
You divide by 5/13. Remember when dividing fractions you multiply by the reciprocal. 5/13 cancels on the left side, leaving t.
So here you have -9/(5/13), but we can put -9 as -9/1, then instead of dividing by 5/13, multiply by 13/5: 117/5. This evens out, when divided, to t=23.4
To answer this problem, given the speed is 7mph and the distance is 11.2mile and its obvious that we can divide the given distance by the speed. The answer is 11.2/7= 1.6 hours
Green pepper: 1 k
Onion: 3 k
Tomato: 9 k
1 k + 3 k + 9 k = 13 k
k = 117 : 13 = 9
3 k = 3 * 9 = 27 cups of onion.
