Write <em>z</em> in exponential form:

Then taking the logarithm, we get

so a is the correct answer.
Answer:
x^3
Step-by-step explanation:
Answer:
Let the smaller integer be x and greater integer be (x+1)
x+(x+1)=91
2x+1=91
2x=91-1=90
x=90/2
x=45
11 over 13 I think is the answer