8. Find the sum of 21 and - 15. *

1 point

a. 6

b. 36

c. - 6

d. - 36

 

This is a required question

9. Find the difference between the top of the mountain that has an altitude of 3486 feet and a valley that is 139ft. below sea level. *

1 point

a. 3 265

b. 3 347

c. 3 437

d. 3 625

10. To be qualified as an encoder, one must be able to type at least 45 words per minute. How many words must be encoded in 15 minutes in order to qualify? *

1 point

a. 635

b. 655

c. 675

d. 685

11. Which of the following properties is used in the expression 1 + 4 = 5? *

1 point

a. Additive Inverse

b. Associative Property

c. Closure Property

d. Commutative Property

12. Which Property is shown in (- x ) + (- 1 ) = (- 1 ) + (- x ) ? *

1 point

a. Associative Property

b. Commutative Property

c. Distributive Property

d. Inverse Property

13. It describes how many parts of a certain size there are. *

1 point

a. decimal

b. fraction

c. set

d. percent

14. It is a number whose whole number part and the fractional part is separated by a decimal point *

1 point

a. decimal

b. fraction

c. set

d. percent

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