Instructions Ensure to perform the following questions. (5 pts each)
1.) When I think of a number, double it and add seven, I get 23. Determine the number that I first thought of.(3 pts.)
2.) I think of a number, double it and subtract three. The result is 12. What number did I think of? (4pts.)
3.) 9 books are to be bought by students. Some cost $6 each and the remainder cost $6.50 each. If the total amount spent was $56, how many of each are bought?
4.) A student went to a bookstore and bought x books costing $5.50 each and y books costing $5.50 each and y books costing $8.50 each. She spent $53.00 and bought a total of 8 books. Find the number of each book bought.
5.) The sides of a rectangle are x cm and 5cm. Its perimeter is 40 cm. Determine the value of x.
6.) The length of a rectangle is 6 cm more than its width. If its perimeter is 60 cm, calculate its dimensions.
Answers
Answer:
Instructions Ensure to perform the following questions. (5 pts each)
1.) When I think of a number, double it and add seven, I get 23. Determine the number that I first thought of.(3 pts.)
2.) I think of a number, double it and subtract three. The result is 12. What number did I think of? (4pts.)
3.) 9 books are to be bought by students. Some cost $6 each and the remainder cost $6.50 each. If the total amount spent was $56, how many of each are bought?
4.) A student went to a bookstore and bought x books costing $5.50 each and y books costing $5.50 each and y books costing $8.50 each. She spent $53.00 and bought a total of 8 books. Find the number of each book bought.
5.) The sides of a rectangle are x cm and 5cm. Its perimeter is 40 cm. Determine the value of x.
6.) The length of a rectangle is 6 cm more than its width. If its perimeter is 60 cm, calculate its dimensions.