28 out of 40 of the students passed the test
2m-4 = x+nx switch sides
2m-4 = x (1+n) common factor
2m-4/1+4 = x divide both side by 1-x
Y+4x=56
y+6x=80
I think these are the two equations that should be used to solve for 'y' and 'x'!!
Answer:
the answer would be B 21.7
Step-by-step explanation:
Present value, P = 20
compounding interest per 6 months, i = 0.025/2 = 0.0125
Number of periods, n = 30*2 = 60 (half-years)
Future value in 30 years
=P(1+i)^n
=20(1.0125)^60
= $42.14
