\fB8. When writing the formula for an exponential function passing through the points (-2, 4/9) and (2, 36) using the form y = ab* , what would be the base, b? a) 4/9 b) 81 c) 1/81 d) 3 e) 1/3B14. dx = x +4 a) x'Inx'+ 4/=c b) 3 In| x + 4 +c c) In|x'+ 4|+c d) - In| x + 4+c e) er+ + c 3\fB22. If y = x2 + I, find the value of the differential dy corresponding to a change in x of (1: = 0.1 when x = 2. a) 0.11 b) 0.5 1:) 0.51 d) 1.2 e) 6.5 A29. A job offer consists of a $27,000 starting salary with a 4% increase each year. To the nearest dollar, what will the salary be in 7 years? a) $34,164 (b) $35,530 (c) $36,951 (d) $38,429 (e) $284,616A3. A population of bacteria is decaying continuously at a rate of T941 every hour. If there are 3.2 million bacteria present at 9AM, which of the following gives the population of bacteria I hours aer 9AM? 3) P(!)=3-2(1.07)' b) P\") = 3.3093); c) P\") = 321 d) P\") =324h a} P(\"=3leh