30:[] 2e:{"title":"APR","cells":[{"id":0,"value":"md`# APR\nChecking Raquel's homework`","pinned":false,"hidden":false,"mode":"ojs"},{"id":4,"value":"html`\n

Compound Interrest Rates

Investment:

Return (APR): %

Compounded: times per year (i.e. monthly would be 12)

\nYearly return: 7.229008%\n
y = 1000*(1.0723)^(years)\n
After years expect 2009.661376695632\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":19,"value":"function compound(I,R,N){\n I=parseFloat(I)\n R=parseFloat(R)/100 // rate was provided in percent\n N=parseFloat(N)\n //console.log(I,R,N)\n return I*(Math.pow(1+R/N,N))\n} ","pinned":false,"hidden":false,"mode":"ojs"},{"id":35,"value":"{\n setTimeout(function(){\n let inv=document.getElementById('inv')\n let ret=document.getElementById('ret')\n let nyr=document.getElementById('nyr')\n let nYears=document.getElementById('nYears')\n let comp=document.getElementById('comp')\n let equation=document.getElementById('equation')\n let expect=document.getElementById('expect')\n // set event listeners\n inv.onkeyup=ret.onkeyup=nyr.onkeyup=nYears.onkeyup=function(){\n let k = compound(1,ret.value,nyr.value)\n let kr = Math.round(k*10000)/10000 // rounded\n equation.innerHTML='y = '+inv.value+'*('+kr+')^(years)'\n comp.textContent=Math.round((k-1)*100000000)/1000000+'%'\n expect.textContent=parseFloat(inv.value)*Math.pow(k,parseFloat(nYears.value))//*parseFloat(nyr.value))\n \n }\n },1000)\n return \"change values in input boxes above and returns will be calculated automatically\"\n}","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}