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3 years ago

Using a Table of Values to Find a Solution to a System

Mathematics

2 answers:

julia-pushkina [17]3 years ago

5 0

Answer:

f(x) = 2.5x - 10.5 and g(x) = 64(0.5)^x

When x = 2,

f(x) = 2.5(2) - 10.5 = -5.5,

g(x) = 64 * 0.5^(2) = 16.

When x = 3,

f(x) = 2.5(3) - 10.5 = -3,

g(x) = 64 * 0.5^(3) = 8.

When x = 4,

f(x) = 2.5(4) - 10.5 = -0.5,

g(x) = 64 * 0.5^(4) = 4.

When x = 5,

f(x) = 2.5(5) - 10.5 = 2,

g(x) = 64 * 0.5^(5) = 2.

When x = 6,

f(x) = 2.5(6) - 10.5 = 4.5,

g(x) = 64 * 0.5^(6) = 1.

Therefore we can see that f(x) = g(x) = 2 when x = 5.

Hence the solution is x = 5.

Step-by-step explanation:

laila [671]3 years ago

4 0

Answer:

This problem wants you to substitute the answers from the table into the equation to find the solution, which is when the input gives the same output basically.

f(x) = 2.5x -10.5 g(x) = 64(0.5)^x

when x= 2... when x= 2...

f(2) = 2.5(2) - 10.5 g(2) = 64(0.5)^2

f(2) = 5 - 10.5 = -5.5 g(2) = 64(.25)= 16

when x= 3... when x= 3...

f(3) = 2.5(3) - 10.5 g(3) = 64(0.5)^3

f(3) = 7.5 - 10.5 = -3 g(3) = 64(0.125) =8

when x= 4... when x = 4...

f(4) = 2.5(4) - 10.5 g(4) = 64(0.5)^4

f(4) = 10 - 10.5 = -0.5 g(4) = 64(0.0625) = 4

when x= 5... when x= 5...

f(5) = 2.5(5) - 10.5 g(5) = 64(0.5)^5

f(5) = 12.5 - 10.5 = 2 g(5) = 64(0.03125) = 2

when x= 6... when x = 6...

f(6) = 2.5(6) - 10.5 g(6) = 64(0.5)^6

f(6) = 15 - 10.5 = 4.5 g(6) = 64(0.015625) = 1

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