Let's consider that 23.5 is 100% of rainfall.
23.5 ..... 100 %
21.2 ..... x %
Calculate x:

, which is around 90.2%.
The percent of decrease is 100 - 90.2 = 9.8 %.
They will earn $50 within ten years because the 5% gives five dollars a year for 10 years
Answer:
there is no pictures. so there for i can not answer your question
for the volume do the equation length×width×height. so 10×4×2.75
Answer:

Step-by-step explanation:
{2 + 2w = l
{94 = 2w + 2l
94 = 2w + 2[2 + 2w]
94 = 2w + 4 + 4w
94 = 4 + 6w
- 4 - 4
_________

[Plug this back into both equations above to get the length of 32 feet]; 
I am joyous to assist you anytime.