function sumAndMultiply(a, b, c) { let summation = sum(sum(a,b)[0],c)[0]; let multiplication= multiply(multiply(a,b)[0],c)[0]; return [summation,multiplication, `${a} and ${b} and ${c} sum to ${summation}.`, `The product of ${a} and ${b} and ${c} is ${multiplication}.`] } testSumAndMultiply(4,7,5);