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algebra

posted by on .

Ok my math assignments look something ike this...
The formula I=prt gives the amouunt of simple interest I earned by principal p at an annual interest rate r over t years. Solve this formula for p.
B. Find p if r=0.035, t=4, and I=$420.
c. Writing.. That does the value p mean in your answer to part B

  • algebra - ,

    its simple just plug r,t and i
    the it would be:-

    i = ptr
    420 = p*4*0.035
    420= .14p
    p= 420/.14
    p=3000

    so p would probably be $3000

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