Math Algebra 1 Unit 7 Review

what is this equation for: y=a(1+-r)^t

steady growth for money

what is a in this equation: y=a(1+-r)^t

initial amount, or ‘amount’

what is 1+ or - in this equation: y=a(1+-r)^t

growth vs decay/weather it get higher or lower

what is r in: y=a(1+-r)^t

rate of percent as decimal

what is ^t in: y=a(1+-r)^t

time in years

what is this equation for: A = P(1 + r/n)^nt

compound interest

what is P in: A = P(1 + r/n)^nt

starting/initial amount

what is r in: A = P(1 + r/n)^nt

interest rate as decimal

what is n in: A = P(1 + r/n)^nt

number of increse(s) in the time period. ex, bi-montly, monthly, bi-weekly, etc

what is t in: A = P(1 + r/n)^nt

time

what is this equation for: a_n = a₁r^n-1

geometric sequence

what is a in: a_n = a₁r^n-1

0th term

what is r in: a_n = a₁r^n-1

common ratio/how much multiplied each time or divided

what is n in: a_n = a₁r^n-1

first term

what is this equation used for: a_n = a₁ + (n - 1)d

an arithmetic sequence

what is n in this equation: a_n = a₁ + (n - 1)d

the 0th term

what is a₁ in this equation: a_n = a₁ + (n - 1)d

the first term

what is d in this equation: a_n = a₁ + (n - 1)d

common difference between terms