Solve the system by substitution. check your solution.
a- 1.2b = -3
0.25 +0.6a = 12
a. (15, 15)
b. (10, 12)
c. (13, 12)
d. (7,9)
select the best answer from the choices provided
oa
ob

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

the circumference is c≈245.04