1600<2570-125.5x<2000 subtract 2570 from all terms...
-970<-125.5x<-570 divide all terms by -125.5 (and reverse signs because of division by a negative!)
7.73>x>4.54 and x is months since January, and since months can only be integers...
x=[5,7]
So January + 5, 6, and 7 respectively are the three months that satisfy the equation...
June, July, and August.
What is being solved for is r.




Answer:
we need $7200 to earn $900 in 5 years.
Step-by-step explanation:
Simple Interest formula:
.......where p is principal, r is rate of interest, t is time
Using the formula:





You would plug in the probelm would be 3(30+8) = 2×30 -6