7. If a = 3 and b = -1, find the value of 2a - 2b. A. -8
B.-4
C. 4
D. 8
8. Evaluate: 2x2y, when x = -3 and y = 5
A-90 B. -30 C. 30
D. 90
Find the value of 4(m-n) if m= 5 and n = -1.
A. 36
B. 24
C. 12
D. -12
10. What will be the value of x²+ y? if x = 4 and y = 2 ?
x-y
C. 8
A. 1
B. 4
D. 10
11. Which of the following is NOT a polynomial?
B. 1
C. V5 xy
A. 5
D.
3a
12. Which of the following is a trinomial?
A. 3x3
C. 4(a+1)
B. -8xyz
D. a+b+c​

Analyze the data sets below. data set a 25,25,25,26,26,26,27,28,28,29,30,31,31,32,33,33,34,35,35,35 data set b 25,25,25,26,26,26,26,27,27,27,27,28,28,29,29,30,31,31,32,34 which of the following statement are true? select all that apply. a. data set a is relatively symmetric and data set b is skewed left. b.the means of the data sets are within 3 units from eachother. c.the data sets have the same standard deviation. d.the mean of data set a is 27.95 and the mean of data set b is 30. e. the data set b has a higher standard deviation than data set a. f. the mean and median of data set a are close in value.

The variable in a relation who’s value depends on the value of the independent variable is called what?

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,