Answer:
25
Step-by-step explanation:
When you simplify you get 16+9
We claim that the answer is 
Since the two graphs both open down, and all the answer choices, in addition to the equation of the blue graph, are quadratic polynomials, the leading coefficient must be negative. This immediately rules out answer choices A, B, and C, leaving D as the answer.
<h3>
Answer: 400 (choice A)</h3>
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Explanation:
40% + 35% = 75% of the coins were either made before 1940, or made from 1940 to 1980. In other words, 75% of the coins were minted before 1980. This leaves 100% - 75% = 25% of the coins to being minted after 1980.
25% of 1600 = 0.25*1600 = 400 coins were made after 1980
When working with percents, don't divide them, because it will give you the wrong answer. So you must find the equivalent of the percent you're working with in decimal form, then multiply it by your number.
So, you would do 550 X .24 which equals 132 customers.
