There are two ways you could do this:
1. (if you have a calculator) This is called decimal multipliers, and basically all you do is multiply 160 by 1.3 because 1.3 is 1 (160) and 0.3 (30%) so you would get 208.
2. (without a calculator) This is the 'long way'. You do 160 ÷ 10 = 16 = 10%, and then 16 × 3 = 48 = 30%. After this you just add 48 on to 160 to get 208.
Hope this helps!
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Sorry, but I can't see this well! I am on lapton, and it is impossible to tilt the whole thing over.
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Step-by-step explanation:
Answer:

Step-by-step explanation:
use the form
to find the values of a, b, and c.

consider the vertex form of a parabola

substitute the values of a and b into the formula 

simplify the right side.
find the value of e using the formula 
