A plot of residuals (vertical deviations from the regression line) shows the errors or lack of fit, so it would indicate a good fit if the residuals are small, vs. over fit if they are large. Due to age related growth short pre teen, and a plateau after age 21, I would expect a linear regression would offer estimate age 5.5 years.
Answer:
I keep getting 67/12
Step-by-step explanation:
7% =.07
.07 * 2.99 = .21 cents (tax)
$2.99 + .21 = $3.20 (each hot dog plus tax)
