(04.03) Angela bought gifts for her friends, and each gift cost $10. Let y represent the total cost and x represent the number of gifts. Write an equation to represent the proportional relationship between the total cost and the number of gifts she bought.

y = 9x
y = 10x
y = one-tenth x
y = one-ninth x

Question

(04.03) Angela bought gifts for her friends, and each gift cost $10. Let y represent the total cost and x represent the number of gifts. Write an equation to represent the proportional relationship between the total cost and the number of gifts she bought.

y = 9x
 y = 10x
 y =  one-tenth  x
 y =  one-ninth x

Vocaloid · Answer

If each gift costs 10 dollars…

One gift is 10
2 gifts is 2*10 = 20
And so on.

So you multiply (number of gifts) * (10) to get the price. With that in mind, what do you think the equation might be?