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4 years ago

Algebra 2 help!

Mathematics

1 answer:

Eddi Din [679]4 years ago

3 0

Answer:

x-intercept: 82.75
y-intercept: 2.15

Step-by-step explanation:

A graphing calculator can show you the intercepts.

___

Or you can figure them out.

The y-intercept is where x=0, so is ...

y = log(12·0 +7) -3 = log(7) -3 ≈ -2.1549 ≈ -2.15

___

The x-intercept is where y = 0, so is ...

0 = log(12x +7) -3

3 = log(12x +7) . . . . . . add 3

10^3 = 12x +7 . . . . . . . take the antilog

993 = 12x . . . . . . . . . . subtract 7

993/12 = x = 82.75 . . . divide by the coefficient of x

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