How to find the annual growth rates?

How do you find the annual growth rates for a quantity that: a) doubles every seven years b) triples every eleven years c) grows by 3% per month d) grows by 18% every 5 months Please help, thank you. Chosen Answer: FV=2 PV=1 N=7 PMT=0 Solve for R FV=3 PV=1 N=11 PMT=0 Solve for R [...]

MATHMATICIANS. How can i work out numbers too small for the calculator?

I need to work out 2.6×10^-12 – 1.3384×10^-26 Could anyone help me figure out how to solve this? Chosen Answer: If you multiply a number times 10 raised to the power of NEGATIVE “X”, then just move the decimal point to the LEFT “X” number of times. So take 2.6. Let’s move the decimal point [...]

1/3 of Mae’s age added to 1/2 of Rea’s age is eleven. Six years from now the sum of their ages will be 40.

How old is each now? If the representation: X- is the present age of Mae Y- is the present age of Rea please help me to find the exact equation. i beg all of you…. please answer me… please, please??? puhlease?? i need your answers as soon as possible… oki? oki? ^^ Chosen Answer: Let: [...]

How to solve & what’s the answer 2 this?: Four more than the quotient of a number and three is eleven?

It’s for my math corrects,- I did really bad on this test, I got an 80%- 18.5/23 problems- and I need to do the corrections because at my school you get half the points back. I usually do well w/ variables and stuff… but not this time Chosen Answer: Let x be the unknown number. [...]