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Answer/Explanation:

 Equivalent fraction: The fraction thus generated looks different but has the same value as the whole

The Common denominator: The equivalent fraction and the other fraction involved in the calculation share the same denominator

4m+11 = 0  

 Subtract  11  from both sides of the equation :  

                     4m = -11

Divide both sides of the equation by 4:

                    m = -11/4 = -2.750

  m= -5/2      

Explanation:

this is the answer , p = 1 + (1/10)x

step-by-step explanation:

we have,

at sea level pressure is 1 atmosphere (i.e at x =0, p0=1 atmosphere)

at depth 23 meters , pressure = 3.3 atmosphere

since the pressure increases at constant rate as the depth increases, so we can write a relation as:

p =p0 +   kx   , where p is the pressure  , p0 is the initial pressure, x is the depth and k is constant rate of increasing.

to find constant rate k, plug p = 3.3 , p0 = 1 and x= 23 meters

we get,

  3.3 = 1 + k * 23

k = 2.3 / 23   = 1/10

so we can write the function formula as:   p = 1 + (1/10)x

the second option.is correct