Real-Life Math: Function Rules and Reasonableness Check

A bakery sells cupcakes for $2 each. If you buy 'x' cupcakes, how much will you spend? Write the function rule and check if spending $10 is reasonable for a whole number of cupcakes.

• Yes, spending $10 is reasonable for 5 cupcakes.

• Spending $10 is reasonable for 3 cupcakes.

• Spending $10 is reasonable for 6 cupcakes.

• Spending $10 is reasonable for 4 cupcakes.

A gardener plants 'x' trees each week. If he plants 3 trees every week, how many trees will he have planted after 4 weeks? Explain your reasoning and check if planting 12 trees is reasonable.

• 12 trees

• 6 trees

• 15 trees

• 9 trees

A book store sells books for $15 each. If you buy 'x' books, write the function rule for the total cost. If you spend $60, how many books did you buy? Check if your answer is reasonable.

• 5

• 2

• 3

• 4

A car rental company charges a flat fee of $30 plus $0.20 per mile driven. Write the function rule for the total cost if you drive 'x' miles. If you drove 100 miles, how much would you pay? Is this reasonable?

• $100

• $30

• $50

• $70

A movie theater charges $10 for a ticket. If 'x' people go to the movies, write the function rule for the total cost. If 5 people go, how much will they spend? Check if spending $50 is reasonable.

• $40

• $50

• $60

• $30

A school is collecting cans for a food drive. If each class collects 'x' cans and there are 4 classes, write the function rule for the total number of cans collected. If they collected 40 cans, is this reasonable?

• No, they should have collected more cans.

• It is not reasonable, they only collected 10 cans.

• Yes, it is reasonable.

• Yes, but only if each class collected 5 cans.

A toy store has a sale where each toy costs $8. If you buy 'x' toys, write the function rule for the total cost. If you spend $32, how many toys did you buy? Explain your reasoning and check if it's reasonable.

• 8

• 6

• 4

• 2

A farmer sells eggs for $3 per dozen. If 'x' dozen eggs are sold, write the function rule for the total revenue. If the farmer sold 5 dozen eggs, how much money did he make? Is this reasonable?

• $5

• The farmer made $15.

• $20

• $10

A gym charges a monthly fee of $25 plus $5 for each class attended. Write the function rule for the total cost if you attend 'x' classes. If you attend 6 classes, how much do you pay? Check if this is reasonable.

• $65

• $45

• $55

• $75

A pizza place charges $12 for a large pizza. If 'x' pizzas are ordered, write the function rule for the total cost. If you order 4 pizzas, how much will it cost? Explain your reasoning and check if it's reasonable.

• $48

• $36

• $60

• $24