Loren solved the equation 10 = StartFraction 19 Over 9 EndFraction (149) + b for b as part of her work to find the equation of a trend line that passes through the points (1, 130) and (10, 149). What error did Loren make?

A. She should have solved 10 = StartFraction 9 Over 19 EndFraction (149) + b for b.
B. She should have solved 1 = StartFraction 19 Over 9 EndFraction (130) + b for b.
C. She should have solved 149 = StartFraction 19 Over 9 EndFraction (10) + b for b.
D. She should have solved 130 = StartFraction 9 Over 19 EndFraction (1) + b for b.
i am going to give brainliest

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95