How do you multiply by two-digit numbers?

What is the supplement of an 87 angle?

What is 2.2 as a fraction in the simplest form

The y-value is ten decreased by the square of the x-value

Which equation represents a proportional relationship that has a constant of proportional equal to 4/5

5 eights greater than 2 thirds

Perform the indicated operation and write the results in the form a+bi 4i (-i+3) - 3 (6-2t)

While on a train trip, Marsha noticed that there were 35 people in her train car. After the next stop, there were only 21 people in her car. If p represents the percent decrease in the number of people in Marsha's train car, what is p?

Which of the following is a better buy: 8 pounds for $12.56 or 11 pounds for $16.83

On a road trip, Maura drove at a speed of 60 miles per hour for the first two hours. She then increased her speed by 25%. How fast was Maura driving after she increased her speed.

Albert can sell a ratio of 20 book every 2 hours. How many book can he sell in 12 hours?