Answer:
B) 
Step-by-step explanation:
The formula for the area of a circle is : 
The radius of a circle is the length from one side to the centre.
To work this out you would have to multiply pi by the radius of 7 squared, this gives you 153.94, however if using pi as in 3.14, then the answer is 153.86.
1) Multiply pi by 7 squared.

ANSWER
A) -20x²+14x+12; all real numbers
EXPLANATION
The give functions are;

and





This is a polynomial, hence the domain is all real numbers.
Answer:
I cant really see the picture make be make another question and upload a screenshot?
:)
Step-by-step explanation:
Answer:
Let C represent the total cost of each deal
Let T be the number of trips down the water slide
C = 32 for the 1st deal since the cost is the same regardless of how much she rides
C = 18 + T for the 2nd deal
To find when the two costs are equal set them equal to each other and solve for T
32 = 18 + T
T = 14 trips
The cost must be $32 since that is the only cost possible for the 1st deal
Step-by-step explanation:
Answer:
-25
Step-by-step explanation:
When you owe someone something, in integers, your answer is in the negative.