Write the multiplication expression shown by the model. Do not solve the problem.

Part A. The multiplication expression = l × w, where l is length and w is width. 

The expression is N = r + g + w + b

Final product = 200 boxes

8(3)=24

3(8) =24

Step-by-step explanation:

Answer (C) ⇒ He replaced the wrong term with its reciprocal in step 2

Answer (A) ⇒ How many 3/8 's in 48

Step-by-step explanation:

∵ The distance = 25 miles

∵ The time = 2/3 hour

∵ Average speed = distance ÷ time

∴ Average speed = 25 ÷ 2/3 ⇒ step 1 (he is √)

                              = 25 × 3/2 ⇒ step 2 (his 1st error 1/25 × 2/3)

                              = 75/2 miles/h

∵ How many 3/8 's are in 48 means:

  48 ÷ 3/8 = 48 × 8/3 = 128

∴ Answer (A) is best modeled with a division expression

Answer (C) ⇒ He replaced the wrong term with its reciprocal in step 2

Answer (A) ⇒ How many 3/8 's in 48

Step-by-step explanation:

∵ The distance = 25 miles

∵ The time = 2/3 hour

∵ Average speed = distance ÷ time

∴ Average speed = 25 ÷ 2/3 ⇒ step 1 (he is √)

                              = 25 × 3/2 ⇒ step 2 (his 1st error 1/25 × 2/3)

                              = 75/2 miles/h

∵ How many 3/8 's are in 48 means:

  48 ÷ 3/8 = 48 × 8/3 = 128

∴ Answer (A) is best modeled with a division expression

1. a.Finding the number of equal- sized parts into which a number can be split

2.b. She replaced both the divisor and the dividened with their reciprocals when changing division to multiplication in step 2.

Step-by-step explanation:

1.

a.Finding the number of equal- sized parts into which a number can be split

It is a division expression because when we find the total number of equal sized number then we divide the number which is split by the number in which a number split.Hence, it is true.

b.Finding the combined value of several numbers

It is obtained by simply adding of several numbers . Therefore, it is not a expression. Hence, it is false.

c. Finding the distance between two numbers on a number line

It is obtained by simply by adding or subtracting of two numbers . Therefore, it is not a division expression. Hence, it is false.

d. Finding the total value when several of the same number are grouped together

It is obtained by simply adding of same number which are grouped together.Therefore, it is not a division expression. Hence, it is false.

2.Joylin' work to solve a math problem

Manny walked of the distance to the library in of an hour

Manny walks at a constant rate it means the speed remain same

Constant rate=

h=

h=

Hence, Joylin makes mistake in second step.

2.b. She replaced both the divisor and the dividened with their reciprocals when changing division to multiplication in step 2.

The answer is in the image 

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

The total nom of  code that can be used is equal to 5+3 = 8

The answer is in the image 

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7