4. Solve for t in each of the following compound interest equations. Leave your answer in terms of a logarithm.
a. 5490 = 4800 (1.009)
b. 3900 = 3000 (1.006)
c. 1460 = 1000 (1.0015)-21
d. 5951.70 = 5000 (1.00875)"
e. 33,010.20 = 30,000 (1.008)"

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )

12+3b -1=-5-b -12-1+5=-b-3b -8=-4b