Question

Can someone please check my math questions? My answers are under the questions. I would really appreciate any help
17. The length of a rectangle is (3x – 7) inches and its width is (x + 5) inches. Find an expression for the perimeter of the rectangle.
a. 4x - 35
b. 4x - 2
c. 8x - 4
d. 8x - 35
Answer~c
18. Which of the following sets does not contain only rational numbers?
a. -5, p/2, 0.5, -0.12
b. -0.4, -0.3333.. , 6.8, 6.888…
c. 11/7, 5/4, 8/5, 32/19
d. ½, ¼, 1/8, 1/16
Answer~ b
19. What is the value of (-3)^
x when x = 3.
a. -27
b. -9
c. 9
d. 27
Answer~a

Answer 1

17 is correct

Answer 2

18 is incorrect
0.333... = 1/3
and 6.888... = 6 8/9 and are rational

Answer 3

19 is correct

Answer 4

Okay, Thank you soo much!!