91Ó°ÊÓ

\((-4 h)(-7 h)\)

\(-8(9 m)\)

A runner is training for a marathon. She wants to reduce the time it takes her to run 6 miles by 3 minutes. She plans to reduce her time by 12 seconds every week. Find the number of weeks needed for her to meet her goal. Use negative numbers to represent loss of time.

Explain why \(\sqrt{-16}\) cannot be a real number.

\(\sqrt[3]{216}\)

The ingredients of a recipe includes \(\frac{3}{8}\) cup grated cheese. If an additional \(\frac{1}{4}\) cup of cheese is used, find the total amount of cheese.

\(12 \div 6 \cdot 2\)

\(12 \div(6.2)\)

A restaurant bill is \(\$ 48\). If the tip is \(15 \%\) of the bill, find the total cost of the meal including tip.

\(15 d-(6 d+1)-d\)