3(x+5)-1 3. A pressure gage for a boiler allows the boiler to run as long as +4(2x-3) s 125 psi, where x is the pressure reading at the sensor. If the pressure gets too high the machine will shut down to prevent any injuries but it will also cost the company money. Test the following values to see what pressures will be safe for the machine to run at.

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1