Answer:MATHPAPA.COM
Step-by-step explanation:
The price of each taco is $10.5
What is unitary method?
We can solve this question by unitary method.
The unitary method is a method of finding the value of one unit and then finding the value of the required number of units. While solving a problem it is important to recognize the units and values.
In this question, 10 tacos cost $105.
Let's represent the cost of 1 taco as
10 tacos =$ 105
1 taco = 
10
= 105
= 
= 10.5
Each taco cost $10,5
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67.65 + 57.93 = 125.58
200.00 - 125.58 = $74.42 change back
If you're taking trig, the "sum and difference formulas for trig functions" are basic facts that you'll need to learn and commit to memory. I'd suggest you look up these formulas on the net. You will likely immediately find listings for the sine, cosine and tangent.