A septic tank has the shape shown to the right. How many gallons does it hold? (1 ft cube equals 7.48 gallons)
A solid has two identical half-sphere bases and a smooth side that connects the two bases. The length of the smooth side is 6 feet 9 inches. The diameter is 3 feet 6 inches.
6' 9''
3' 6''

We need more info then that

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )

It is b as the correct answer is 0.088, you are able to work these out on a calculator or without a calculator if you type in the exact sum that is given for harder questions like these!