Problem of the Week

Sep 5, 2021 | Folsom

 

 

 

 

 

 

 

Did you figure it out?

Solution:  To find the amount of time the ball stays in the air, we find the values of t that put the ball 0 feet above the ground by solving for f(t) = 0. We can use the quadratic formula and our calculators to find that when 5t² + 15t + 2 = 0, t can be either a negative value or ~3.1279... seconds. So, the ball is in the air for approximately 3.1 seconds.

 
 
 
 

 

 

 

 

 

 

 

 

 

Did you figure it out?

Solution:   Since 75% is the same as ¾, the price of the discounted glamour portraits is ¼ the original price. So, the glamour portraits cost $26.00 ÷ 4 = $6.50.