6. Apples cost $1.99 per pound.
1 answer:
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Answer:
he Present age of Prisca will be 4 years .
Step-by-step explanation:
Given as :
The ratio of present age of Prisca and Ashmaal = 2 : 3
Let The present age of Prisca = 2 x years
Let The present age of Ashmaal = 3 x years
After 4 years , the ratio of present age = 4 : 5
i.e =
Or, 5 × (2 x + 4) = 4 × (3 x + 4)
Or, 10 x + 20 = 12 x + 16
Or, 12 x - 10 x = 20 - 16
Or, 2 x = 4
∴ x =
i.e x = 2
So, The present age of Prisca = 2 x = 2 × 2 = 4 years
And The present age of Ashmaal = 3 x = 3 × 2 = 6 years
Hence, The Present age of Prisca will be 4 years . Answer
The exponential function which has the greatest average rate of change over the interval [0, 2] is option B.
<h3>How to calculate the average rate of change?</h3>Mathematically, the average rate of change between two (2) points can be calculated by using this expression;
For option A, we have:
when x = 0; when x = 2;
y = 3(1.6)^x y = 3(1.6)^x
y = 3(1.6)^0 y = 3(1.6)^2
y = 3. y = 7.68
ΔA = (7.68 - 3)/(2 -0) = 2.34.
For option B, we have:
ΔA = (9 - 4)/(2 -0) = 2.5.
For option C, the exponential function has a common ratio of 2.
ΔA = 2.
For option D, we have:
ΔA = (10 - 8)/(1 -0) = 2.
In conclusion, we can logically deduce that the exponential function which has the greatest average rate of change over the interval [0, 2] is option B i.e 2.5.
Read more on average rate of change here: brainly.com/question/3493733
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