The decay of 942 mg of an isotope is described by the function a(t)= 942e-0.012t, where t is time in years. find the amount left after 71 years. round your answer to the nearest mg.

Applying the exponential function, it is found that the amount after 71 years is of 402 mg.

The exponential equation for the amount after t years is given by:

For the amount after 71 years, we find A(71), thus:

The amount after 71 years is of 402 mg.

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infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions