Answer:the diameter is 7
Step-by-step explanation: 21.98 divide by pi is 7 so diameter is 7
1, both functions are linear
-9 degrees Celsius
because when the temp is negative it and it keeps going down, then the numbers basically get added and have a negative sign in front of it.
-3 +-2 +-4 = -9
1
∫ f(x) dx = x⁵/5 + 3x⁴/4 - 5x³/3
-1
[1⁵/5 + 3⁴/4 - 5³/3] - [ -1⁵/5 -3⁴/4 +5³/3]
plug that into your calculator and that's your rate of change
10.5÷3.5 = 3
6x3 = 18
18 feet is your answer (hope this helps)