Answer: 17. D) $0.01 19. D) None of the above. 18. E) 33 tables. 20. E) 60.
Explanation:
To answer your questions, let’s first write the expressions for each situation using variables and operations. Then, we can solve for the unknown values using arithmetic rules. We have:
7.) Emily had $75 to spend on gifts. If she bought a pearl necklace for $37.25, a DVD for $19.99 and a bottle of 747 Perfume for $17.75, how much change did she receive?
Let x be the amount of change that Emily received. We can write an equation as follows:
75−(37.25+19.99+17.75)=x
We simplify the parentheses by adding the numbers inside:
75−74.99=x
We subtract 74.99 from both sides and get:
0.01=x
So, Emily received $0.01 as change. Therefore, the correct answer is D) $0.01.
19.) Cayman had 120 stamps in a collection. She bought 60 more. Ruby wants to place the stamps equally on six pages of a book. How many stamps will be on each page?
Let x be the number of stamps that Ruby will place on each page. We can write an equation as follows:
6120+60=x
We simplify the numerator by adding the numbers:
6180=x
We divide both sides by 6 and get:
30=x
So, Ruby will place 30 stamps on each page. Therefore, the correct answer is D) None of the above.
18.) Camden takes 264 pictures to display at the art fair. He places 8 pictures on each table at the fair. How many tables will Camden need in order to show all of his pictures?
Let x be the number of tables that Camden will need. We can write an equation as follows:
8264=x
We divide both sides by 8 and get:
33=x
So, Camden will need 33 tables to show all of his pictures. Therefore, the correct answer is E) 33 tables.
20.) Adan collected 98 empty cans to recycle and Zaine collected 82 cans. They packed an equal number of cans into three boxes to take to the recycling center. How many cans were in each box?
Let x be the number of cans that were in each box. We can write an equation as follows:
398+82=x
We simplify the numerator by adding the numbers:
3180=x
We divide both sides by 3 and get:
60=x
So, there were 60 cans in each box. Therefore, the correct answer is E) 60.