Simplify (-1) x 7.

Simplify 2 x 8.

Simplify (-4) x (-3).

A box of assorted chips contains 10 packs. How many packs of chips are there in 3 boxes? 

One dime is equivalent to 2 nickels. How many dimes are equivalent to 12 nickels?

In a supercar test, the initial average speed of car A is 5 miles per minute. How far (in miles) is car A expected to travel after 3 minutes of operation? 

David works at a fast-food restaurant for $15 an hour. If he receives $300 after a week, how many hours did he spend working?

Mary saves $9 a week from her weekly school allowance. If this continues, how much (in dollars) would she save in 12 weeks?

A dozen is 12 pieces. How many dozen is equivalent to 144 pieces?

In the sequence, 1, 3, 9, 27, 81, ... What is next to 81?

If 60 minutes is 1 hour. How many minutes are in 3.5 hours?