Interest=1250-880=370
I=PRT
P=principal
r=rate in deicmal
t=time in years
1 month so t=1/12
P=880
I=370
370=880*r*1/12
370=220/3r
times both sides by 3
1110=220r
divdie both sides by 220
5.04545=r
505% interest
Answer:
B.
Step-by-step explanation:
Answer:
C. y=3x-4
Step-by-step explanation:
I just know trust me
The sum of $3,000 was invested at 7.3% whereas $8,000 was invested at 10.7%
What is the annual income of each investment?
The annual income of each investment is determined as the amount invested multiplied by interest rate and time of investment
I=PRT
I=annual income=$1075
P=x at 7.3%, 11000-x at 10.7%
R=7.3%and 10.7%
T=1 year
I at 7.3%=x*7.3%*1
I at 7.3%=0.073x
I at 10.7%=(11000-x)*10.7%*1
I at 10.7%=1177-0.107x
annual income=0.073x+1177-0.107x
1075=1177-0.034X
0.034X=1177-1075
0.034x=102
x=102/0.034
x=$3,000
11000-x=11000-3000
11000-x=8000
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