math for me and the kids?

Question

1. Let c = number of cassettes that Naomi has. In terms of c, how many cassettes does Sam have?

c + 19
c + 7

c + 5

2. In terms of c, how many cassettes do Sam and Naomi have together?

3c + 19
3c + 7

2c + 7

3. Choose an equation based on the information, in terms of c, for how many cassettes Sam and Naomi have together.

2c + 7 = 19
c = 19

c + 7 = 12

4. How many cassettes does Naomi have?

6
4

13

5. How many cassettes does Sam have?

6
4

13

6. Chris cycled four times as far as David did. If Chris traveled 96 km, how far did David travel? Choose the correct equation and distance.

4d = 96; 24km
3d = 96; 32km

4d = 80; 20km

7. A rectangular field has a perimeter of 350m. The width is 75m. What is the length of the field? Choose the correct equation and distance.

350L + 2(75) = 2; 100m
5L = 350; 70m

2L + 2(75) = 350; 100m

Answer 1

c+7

2c+7

2c+7 = 19

2c= 12
c= 6 = Naomi's cassettes

c+7 = 13

4d=96 d=24

2L +2(75) = 350 ; L=100