Answer:

Step-by-step explanation:
The formula to find the area of a circle is

Let pi be (3.14), the radios as given in the question is (0.9). Therefore;

Answer:
-3/4
Step-by-step explanation:
Use rise over run. Since the line is going down you know it will be negative and basically you just count squares.
Answer: uuf, hard
Step-by-step explanation: SORRY, DON'T KNOW
Answer: 23
Explanation: simplify using PEMDAS so solve parentheses, then solve the exponent, multiply the second number by 4, and then add, then subtract.
Hope this helps!