var MathObject = {
val: 42,

getValplusN: function(n) {
this.val = this.val+n;
return(this.val);
},

setVal: function(newVal){
this.val = newVal;
},
getVal: function(){
return this.val;
},
getSqrVal: function(){
this.val = this.val * this.val;
return this.val;
}

};
MathObject.getValplusN(4);

pls respond