Unexpected strict mode reserved word [closed]

let lettuceNeeded;

let tomatoNeeded;

let cucumberNeeded;

let dressingNeeded;

let servings;

let recipe;

function calcLettuce(numServings)

let numServings = 2;

let lettuce = 1;

let totalLettuce = lettuce * numServings;

return totalLettuce;

}

function calcTomato()

{

let tomato = .5;

let totalTomato = tomato * numServings;

return totalTomato;

}

function calcCucumber(numServings)

{

let cucumber = .25;

let totalCucumber = cucumber * numServings;

return totalCucumber;

}

function calcDressing(numServings)

{

let dressing = 1;

let totalDressing = dressing * numServings;

return totalDressing;

}

console.log(“~~~Welcome to the Recipe Calculator~~~”)

recipe = prompt(“Enter the name of your recipe: “);

servings = Number(prompt(“Enter the number of servings: “));

console.log();

lettuceNeeded = calcLettuce(servings);

tomatoNeeded = calcTomato(servings);

cucumberNeeded = calcCucumber(servings);

dressingNeeded = calcDressing();

console.log(“For ” + servings + ” servings of “+recipe+”, you will need to buy the following ingredients: “);

console.log(lettuceNeeded + ” cups of lettuce”);

console.log(tomatoNeeded + ” tomatoes”);

console.log(cucumberNeeded + ” cucumbers”);

console.log(dressingNeeded + ” ounces of dressing”);

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