Combining Like Terms to Solve Equations Answers

At the beginning of the week, Naveen has 87 trading cards. On Monday, he gets 9 more. On Tuesday, he gives 16 away. On Wednesday, he is given 3 by a friend. On Thursday, he sells all of his cards to a collector. The collector pays him a rate of c for every card that Naveen has. If Naveen earns $124.50 from the sale, what is c, the rate that the collector pays for each card?

Kiemanh is solving the equation . What is the value of r?

Which expression is equivalent to ?

Imogen bought i number of invitations to send out for her party. After she sent out 19, she was left with 11. What is the value of i?

Shau-uen solved the equation . Her work is shown below.Step 1Step 2Step 3Step 4In which step did Shau-uen make her first error?

Judah worked at the bakery for 14 hours last week. He spent $12 of his earnings on a cake for his father’s birthday. If he was left with $86 after buying the cake, what is Judah’s hourly wage?

Nisha did the work below to solve an equation.Step 1Step 2Step 3Step 4In which step did Nisha make her first error?

Mrs. McAlister wrote the equation on the board and asked students to write an equivalent equation. The table below shows the responses from four students.Student ResponsesNameEquationMichelePiotrRonnieTanishaWhich student wrote an equation that is equivalent to Mrs. McAlister’s?

Soo-Jung used the subtraction property of equality to solve an equation for y. Which equation could be the one that Soo-Jung solved?

Mr. Pham wrote the equation below on the board.What is the value of x?