Question

Choose the best definition for the following term: exponent (1 point)

The number listed first when combining a variable and a number

The number or value being raised to a power

A letter that holds the place of some unknown value in mathematics

Shorthand that tells how many times the base is used as a factor, or how many times the base is multiplied by itself

3. 
(01.02)
Simplify the following expression:
2x − 2y + 5z − 2x − y + 3z (1 point)
 

x − 3y + 8z

2x − 2y + 8z

3y + 8z

−3y + 8z

4. 
(01.02)
Evaluate the following expression using the values given:
Find 3x − y − 3z if x = −2, y = 1, and z = −2. (1 point)
 

−13

−1

1

13

Answer 1

exponent : Shorthand that tells how many times the base is used as a factor, or how many times the base is multiplied by itself

2x - 2y + 5z -2x - y + 3z....combine like terms
2x - 2x = 0
-2y - y = -3y
5z + 3z = 8z
put it all together and u get : -3y + 8z

3x - y - 3z......x = -2, y = 1, z = -2
sub
3(-2) - 1 - 3(-2)
-6 - 1 + 6
-1 <===