exam Maths Puzzle Numerical Ability

Could someone please help me with this problem?

Graph y=2^x-3. Label all x-intercepts, all y-intercepts, horizontal asymptotes, and vertical asymptotes.

Thank you!!

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exam Other Question

Which of these ordered pairs is a solution for the equation 3x-2y=6?
(a)(0,-3)
(b)(0,3)
(c)(-2,0)
(d)(-2,-3) For positive numbers a and b and natural number n show that 1/a+b + 1/a+2b +....+ 1/a+nb < n/squrt root a(a+nb).