The quantity a varies inversely with b and directly with c. Which equation models this relationship?
A. c=kb/a
B. a=kc/b
C. a=kb/c
D. b=ka/c

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

An equation where variables are used to represent known values—function notation true or false

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36