A dinner bill for jeff came out $21.00.Jeff paid a total of $24.00 including tip. How big of a tip did jeff leave, as a percentage of the original bill? Fill in the blank with a percent .Round your percent to whole numbers like 11%
Jeff left a tip of %

The parabola opens: y=√x-4 (principal square root) up down right left

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?