Corelise has 3 wooden bookcases that contain all of her books. The first bookcase has 3 shelves with 22 books on each shelf. The second bookcase has 4 shelves with 18 books on each shelf. The third bookcase has 5 shelves with 17 books on each shelf.
Part A
Write an expression for how many books she has.
A.
(
3
×
22
)
+
(
4
×
18
)
+
(
5
×
17
)
B.
(
3
+
22
)
×
(
4
+
18
)
×
(
5
+
17
)
C.
(
3
+
22
)
+
(
4
+
18
)
+
(
5
+
17
)
D.
(
3
×
22
)
+
(
4
+
18
)
+
(
5
×
17
)
Part B
Stephan has 230 books. Does Corelise have more than Stephan?
Choose...
, she has
Choose...
Choose...
than Stephan.
6 / 7
5 of 7 Answered
Part A: A. (3 x 22) + (4 x 18) + (5 x 17) = 66 + 72 + 85 = 223 books.
Part B: Since Corelise has 223 books, which is less than Stephan's 230 books, the answer is "No, she has fewer books than Stephan."
Annmarie has red, black, and green pens. She has 5 red pens and 7 black pens. She has 3 times as many green pens as red pens.
Part A
Drag the tiles to write an expression for the total number of pens she has. Tiles may be used once, more than once, or not at all.
+×57
5
+
3
Part B
How many pens does she have in all?
A.
20 pens
B.
27 pens
C.
51 pens
D.
75 pens
Part A: (5+7) + (3x5) = 12 + 15 = 27
Part B: Annmarie has 27 pens in all, so the answer is B. 27 pens.
Part A:
To find the expression for how many books Corelise has, we need to calculate the total number of books on each shelf in each bookcase and then sum them up.
The expression is (3 x 22) + (4 x 18) + (5 x 17).
Option A is correct: (3 x 22) + (4 x 18) + (5 x 17).
Part B:
We know that Stephan has 230 books. To determine if Corelise has more books than Stephan, we need to compare the number of books Corelise has with the number of books Stephan has.
We can use the expression we found in Part A, which is (3 x 22) + (4 x 18) + (5 x 17). We need to compare this to 230.
Since we do not have the actual values for (3 x 22) + (4 x 18) + (5 x 17), we cannot determine if Corelise has more or fewer books than Stephan.