If the radius is 10 ft, what will be the area of the circle!

Aphrase is shown read the phrase and give me the answer

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas