Use the substitution method to solve the system of equations. y=4x 8x+y=18

Step-by-step explanation:

y = 4x

8x + y = 18

8x + 4x = 18

12x = 18

x = 18/12 = 3/2

y = 4(3/2)= 6

(3/2, 6)

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the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

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