Answer:
Domain: all real numbers
The interval on which the function is increasing is : (0 , infinity)
The interval on which the function is decreasing is : (-infinity , 0)
The interval on which the function is constant is : ( 0,0 )
Step-by-step explanation:
f(r)=5r^2−4
This is a quadratic function.
vertex at (0, -4) and with positive coefficient for r^2
The interval on which the function is increasing is : (0 , infinity)
The interval on which the function is decreasing is : (-infinity , 0)
The interval on which the function is constant is : ( 0,0 )
Answer:
20 Blocks
Step-by-step explanation:
6 Minutes 4 Blocks
----------------- = -------------------
30 Minutes 20 Blocks
Because 6 was multiplied by 5 to get 30 minutes in total then 4 blocks need to be multiplied by 5 as well.
250 - 70 = 180
10 x 18 = 180
Irene will need to say 10 dollars a week for 18 weeks.
