To answer this item, we let x be the number that is not unknown in this item such that the situation in this problem can be expressed as follows,
x - 9.3 = 68.91
Adding 9.3 to both sides of the equation,
x - 9.3 + 9.3 = 68.91 + 9.3
Simplifying,
x = 78.21
The answer to this item is 78.21, this I think is the first choice except that it is mistakenly written as 7.21 only.
Electronics is the best answer.<span />
Answer: 40.43% increase (rounded)
Explanation:40.42553191489361% increase
Geographic information systems will increasingly find applications in public health. The public health is focused on the health of populations and on prevention. G<span>eographic information and geographic information systems (GIS) can contribute to better management, operation and organization in the public health.</span>
I would pick IRRIGATED. Hope that helped !