Mary had 21 dollars to spend on 2 notebooks. After buying them he had 13 dollars. How much did each notebook cost?

Subtract 6x+2 from 3x-6

What is (2x10^1) the answer in scientific notation

Freddy is 4 years older than 8 times his grandson's age. the sum of their ages is greater than 67. what is the youngest age freddy's grandson can be?

What is the height, in inches, of a parallelogram that has a base of 4 feet and an area of 336 square inches? 84 in. 1,344 in. 16,128 in. 7 in.

Find the perimeter and the area of a rectangle measuring 8 1/4 yd long by 4 1/8 yd wide

3x+2 (4x-4) = 3 answer choices-1,2,3,4

What is the absolute value of | 7.5 |

If you are given measurements how can you determine if it is a triangle

If you are making a scale drawing of a giraffe that is 6m tall, and the height of the giraffe in your drawing is 3 cm, what is the scale of the drawing?

If someone gives u $500 and u lose it. Then someone else gives u $500 and u spent $300. You give the second person $100 and the first person $100. How much do u owe in total?