You have 2 different savings accounts. For Account A, the simple interest earned after 9 months is $3.49. For Account B, the simple interest earned after 21 months is $17.50. If the interest rate is 3.1% for Account A and 2.5% for Account B, how much is the principal in each account? Which account earned you the most interest the first month? Explain your answer.

What is the definition of exponential decay?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)