30 POINTS PLS HELP ASAP! AND ANSWER EACH ONE

1. a square bulletin board has an area of 100ft^2

what is the side length of the bulletin board? ft

what is the perimeter of the bulletin board? ft

2.which is the correct classification of the vaule 2pi?
A. real, rational, integer
B. real, rational
C. irrational, integer
D. real, irrational

3. simplify each expression
-9x +12 - 10 + x
3/4x + 17 - 1/4x - 19
13 + 12x - 4x - 14
-3/2x - 68 + 2x + 8

brainlist will be added if explation if but down for each *not required tho*

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air