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Which of the following is correct? *

2⁵=10
1⁵=1

When x= 3, which expression has the value 9 *

5x - 2

2x

If a=5, which expression has the value 15 *

3a
4a
5a

What is the value of 4x² + 3 when x=0? *

7
4
3

What is the value of 10x if x=3? *

13
20
30

What is the degree of 7x⁹ - 20x⁵ + 10²+3? *

20
9
7

What is 9³? *

27
729

Evaluate (-2)⁴ *

-8
8
-16
16

What is the value of 3xy if x=3 and y=-2? *

-18
4
18

Evaluate 3x + y for x=4 and y = 6 *

18
17
16

Evaluate abc if a=2, b=-3, and c=4 *

-24
3
24

What is the value of x+3y if x=2 and y=-1?


-1
5