Answer: x = -1
Step-by-step explanation:
You need to convert to the same base

So

For these values to be equal, the exponents have to be equal
-4 = -2x - 6
2 = -2x
x = -1
THE SURFACE AREA IS 3220CM^2
He'll get $14.03 because 20.25 is what he gave but it only came up to 6.22 so 20.25-6.22=14.03
Are you trying write it into slope intercept form ?
60% of 20 is (0.6 x 20) = 12 passes
There are a further 30 quizzes remaining (50 total during the year minus 20 already written)
80% of 30 is (0.8 x 30) = 24 passes
The student has passed (12 + 24) = 36 quizzes out of 50 total, giving an overall pass percentage of ((36 / 50) x 100)) = 72%.