Divide the total spent by the number of months:
1440 / 4 = $360 per month
The answer is D. $360
Answer:
1. Hush
Step-by-step explanation:
METHOD 1
f(3) = 20
f(4) = 30
f(5) = 42
f(6) = 56
rate of change
f(4)-f(3)=10
f(5)-f(4)=12
f(6)-f(5)=14
then the average of change is 10+12+14 /3 = 12
METHOD 2 --- faster
rate of change = f(6)-f(3) / 6-3
= (36+18+2)-(9+9+2) / 3
= 36/3 = 12
Hi,
5x - 5 + 3x + 3 = 2x - 2.
2x - 2 = 180°
So x = 180/2 - 2 = 88°
