Donald has x twenty-dollar bills and 11 ten-dollar bill. How much money does Donald have? Write your answer as an expression.

Find - 3a divided by 6 when a=-2 write the answer in simplest form.

Jeans are $20 for 2 pairs. Kerry spent $40 on jeans. How many pairs did she buy?

A cartoon can hold a thousand units cubes that measure 1-inch by 1-inch by 1-inch describe the dimensions of the cartoon using unit cubes

A dump truck can hold 3 3/4 tonnes of gravel. How many trips are needed to move 35 tonnes of gravel using this truck?

Anyone good at explaining Synthetic Division?

An oil well off the Gulf Coast is leaking, with the leak spreading oil over the water's surface as a circle. At any time t, in minutes, after the beginning of the leak, the radius of the circular oil slick on the surface is r (t) = 4 feet.

A pizza is cut into six unequal slices (each cut starts at the center). The largest slice measures $90$ degrees: [asy] unitsize (0.

What is the probability of spinning green on the first spinner and blue on the second spinner?

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According to the U. S. Geological Survey, the Mississippi River is 200 mi shorter than the Missouri River. Together, they cover a total of 4880 mi. Find the lengths of each river.