Question

The panda at the zoo became ill and lost 4 pounds every week for 5 weeks. In the sixth week, she began to feel better and gained 3 pounds. Write and find the value of an expression for the change in the panda's weight over these six weeks.

Last week, Clay wrote 4 checks for $20 each from his checking account, withdrew another $30, and finally made a deposit of $96. What was the change in the balance of his account over the week? Write and evaluate an expression for the situation.

Answer 1

The panda's total weight change over six weeks is a loss of 17 pounds. The change in balance of Clay's account over the week is a decrease of $14.

Step-by-step explanation:

To find the change in the panda's weight over the six weeks, we need to consider the weight lost and the weight gained. The panda lost 4 pounds each week for 5 weeks. Then, in the sixth week, the panda gained 3 pounds. The expression for the change in weight is:

(-4 pounds × 5 weeks) + 3 pounds

Now let's calculate:

(-20 pounds) + 3 pounds = -17 pounds

So the panda's total weight change over the six weeks is a loss of 17 pounds.

For Clay's checking account, he wrote 4 checks for $20 each and made a withdrawal of $30. Then, he made a deposit of $96. The expression for the change in his account balance is:

(-20 dollars × 4) - 30 dollars + 96 dollars

Calculating the result:

(-80 dollars) - 30 dollars + 96 dollars = -14 dollars

The change in balance of Clay's account over the week is a decrease of $14.