Answer:
2
Step-by-step explanation:
if x=4
4/5 (2(4)+7) - 2/3(2(4)+7)
4/5 (8+7) - 2/3(8+7)
4/5(15) -2/3(15)
12 - 10
2
Answer:
it became 1.9 times larger
Step-by-step explanation:
2 2/3 cups is = 128 teaspoons and 3/16 is = 9 teaspoon. 128÷9=14.22.. so the answer would be 14
Answer:
169.72
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Answer:
B. A(r(t)) = 25πt²
Step-by-step explanation:
Find the completed question below
The radius of a circular pond is increasing at a constant rate, which can be modeled by the function r(t) = 5t where t is time in months. The area of the pond is modeled by the function A(r) = πr². The area of the pond with respect to time can be modeled by the composition . Which function represents the area with respect to time? A. B. C. D.
Given
A(t) = πr²
r(t) = 5t
We are to evaluate the composite expression A(r(t))
A(r(t)) = A(5t)
To get A(5t), we will replace r in A(t) with 5t and simplify as shown
A(5t) = π(5t)²
A(5t) = π(25t²)
A(5t) = 25πt²
A(r(t)) = 25πt²
Hence the composite expression A(r(t)) is 25πt²
Option B is correct.
