Expressions with Parentheses & Combining Like Terms

A store sells 3 types of fruit: apples, bananas, and oranges. If the price of apples is $2 each, bananas are $1 each, and oranges are $3 each, write an expression for the total cost of buying 4 apples, 5 bananas, and 2 oranges. Use parentheses correctly.

• (4 * 1) + (5 * 2) + (2 * 3)

• (4 * 2) + (5 * 3) + (2 * 1)

• (4 * 2) + (5 * 1) + (2 * 3)

• (4 + 5 + 2) * 2

Maria has 5 times as many stickers as her friend. If her friend has x stickers, write an expression for the number of stickers Maria has. Then, if her friend gives away 3 stickers, write a new expression for the total number of stickers Maria has in terms of x.

• 5x

• x

• 5x - 3

• 4x

A recipe requires 2 cups of flour and 3 cups of sugar. If you want to make 4 batches of the recipe, write an expression for the total amount of flour and sugar needed. Use parentheses to group the ingredients correctly.

• (2 * 3) cups of flour + (3 * 2) cups of sugar

• (2 + 4) cups of flour + (3 + 4) cups of sugar

• (2 * 4) cups of flour + (3 * 4) cups of sugar

• (4 * 2) cups of flour + (4 * 3) cups of sugar

In a school, there are 120 students in total. If 40% of them are in the basketball team and the rest are in the soccer team, write an expression to find the number of students in the soccer team. Combine like terms in your final expression.

• 60

• 72

• 48

• 84

A car rental company charges a flat fee of $50 plus $0.20 per mile driven. Write an expression for the total cost of renting a car for m miles. Use parentheses to show the components of the cost clearly.

• (0.20 + 50m)

• (50 + 0.20m)

• (50 + (0.20 * m))

• (50 * m + 0.20)

Tom has 3 times as many marbles as Jerry. If Jerry has y marbles, write an expression for the number of marbles Tom has. If Tom gives away 5 marbles, write a new expression for the number of marbles Tom has in terms of y.

• y + 5

• 3y - 5

• 2y - 5

• 3y + 5

A gardener is planting flowers in rows. If each row has 6 flowers and there are r rows, write an expression for the total number of flowers planted. If the gardener decides to plant 2 more flowers in each row, how does the expression change?

• 7 * r

• 10 * r

• 6 * r; 8 * r

• 5 * r

A book costs $15, and there is a sale where you can buy 3 books for the price of 2. Write an expression for the total cost of buying b books during the sale. Use parentheses to clarify the calculation.

• (b / 3) * 15

• (b + 2) * 15

• ((b // 3) * (2 * 15)) + ((b % 3) * 15)

• (b * 15)

In a class, there are 30 students. If 12 students are boys and the rest are girls, write an expression for the number of girls in the class. If 5 more girls join the class, how does the expression change?

• The expression for the number of girls is '30 + 12'. After 5 more girls join, the expression changes to '30 + 17'.

• The expression for the number of girls is '12'. After 5 more girls join, the expression changes to '12 + 5'.

• The expression for the number of girls is '30 - 15'. After 5 more girls join, the expression changes to '30 - 10'.

• The expression for the number of girls is '30 - 12'. After 5 more girls join, the expression changes to '30 - 7'.

A pizza place offers 2 sizes of pizzas: small and large. A small pizza costs $10, and a large pizza costs $15. Write an expression for the total cost of buying s small pizzas and l large pizzas. Use parentheses to group the costs correctly.

• (10 * s) + 15 * l + 5

• (10 * s) + (15 * l)

• 10 * s + 15 * l

• (10 + s) + (15 + l)