Y7 T1 W10 Writing Formulae 2

You want to find the total cost of buying multiple items, each priced at $10. Write a formula for the total cost based on the number of items.

• 10x

• 10 + x

• x - 10

• x / 10

A cell phone plan charges $20 per month for calls and $5 for each gigabyte used. Which formula to calculate the monthly cost based on data usage.

• Cost = 20g - 5

• Cost = 25g

• Cost = 5g + 20

• Cost = 20g + 5

You are organizing a party. The big balloon costs 3.5 AED each, while the smaller ones costs 2 AED. Write a formula to calculate the total cost for the balloons.

• Total cost = 3.5x + 2y

• Total cost = 5.5xy

• Total cost = 2x - 3.5y

• Total cost = 3.5x - 2y

The final score in a video game is calculated by adding the number of points earned and subtracting the number of lives lost. Write a formula for the final score.

• Final Score = xy

• Final Score = x/y

• Final Score = x + y

• Final Score = x - y

The total cost of renting a car is calculated as a base rate of $30 plus an additional $1.50 per Kilometer driven. Create a formula to calculate the total cost of renting a car.

• Cost = 30 + 1.5k

• Cost = 1.5 + 30k

• Cost = 31.5k

• Cost = 1.5k - 30

The cost of shipping a package is determined by its weight in kilograms and the shipping rate per kilogram. Create a formula to calculate the shipping cost.

• Shipping cost = weight (kg) * shipping rate (per kg)
• Shipping cost = weight (kg) - shipping rate (per kg)
• Shipping cost = weight (kg) / shipping rate (per kg)
• Shipping cost = weight (kg) + shipping rate (per kg)

You're planning a picnic, and you want to calculate the total cost of sandwiches, each priced at $5 and soda, each priced at $1.5. Write a formula for the total cost based on the number of sandwiches and soda.

• total cost = a + b

• total cost = 1.5a - 5b

• total cost = 5a + 1.5b

• total cost = 7.5ab

You're organizing a bake sale, and each cookie costs $1.50 to make. Write a formula for the total cost of making 'x' cookies.

• total cost = 1.5 + x

• total cost = 1.5 / x

• total cost = 1.5 - x

• total cost = 1.5x

You receive a $500 bonus at work, and you want to calculate your total earnings, including the bonus. Create a formula for total earnings if you earn $25 per hour.

• $25 per hour multiplied by the number of hours worked plus $500 bonus
• $25 per hour divided by the number of hours worked plus $500 bonus
• $25 per hour minus the number of hours worked plus $500 bonus
• $25 per hour multiplied by the number of hours worked minus $500 bonus

You're ordering pizza for a party, and each pizza costs $12. Write a formula for the total cost of ordering 'y' pizzas.

• Total Cost = 12 + y

• Total Cost = 12 / y

• Total Cost = 12y

• Total Cost = 12 - y