17th century by Rene Descartes
Answer:
The height of the ball after 3 secs of dropping is 16 feet.
Step-by-step explanation:
Given:
height from which the ball is dropped = 160 foot
Time = t seconds
Function h(t)=160-16t^2.
To Find:
High will the ball be after 3 seconds = ?
Solution:
Here the time ‘t’ is already given to us as 3 secs.
We also have the relationship between the height and time given to us in the question.
So, to find the height at which the ball will be 3 secs after dropping we have to insert 3 secs in palce of ‘t’ as follows:


h(3)=160-144
h(3)=16
Therefore, the height of the ball after 3 secs of dropping is 16 feet.
Answer:
Walter builds birdhouses. he spends $5 on the materials for each birdhouse. he can build one in 30 minutes. he is semi-retired but earns $8 per hour at the local hardware store. he can sell a birdhouse for $20 each. refer to scenario 13-11. the explicit cost for one birdhouse is
Step-by-step explanation:
Change 2/3 to decimal point ( 2/3 = 0.67)
$450 x 0.67 = $301.50 (total sale price)
$450 - $301.50 = $148.50 (final price paid)
so, Wally paid $148.50 for the Desk.