Write the sum using summation notation, assuming the suggested pattern continues. -3 + 6 + 15 + 24 + ... + 132 summation of negative 27 times n from n equals 0 to infinity summation of negative 27 times n from n equals 0 to 15 summation of the quantity negative 3 plus 9 n from n equals 0 to infinity summation of the quantity negative 3 plus 9 n from n equals 0 to 15 Question 12(Multiple Choice Worth 7 points) Find the first six terms of the sequence. a1 = -7, an = 4 • an-1 -7, -28, -112, -448, -1792, -7168 -28, -112, -448, -1792, -7168, -28,672 -7, -28, -24, -20, -16, -12 0, 4, -28, -24, -20, -16 Question 13 (Essay Worth 8 points) Use mathematical induction to prove the statement is true for all positive integers n. 10 + 20 + 30 + ... + 10n = 5n(n + 1) Question 14 (Essay Worth 8 points) A certain species of tree grows an average of 3.1 cm per week. Write an equation for the sequence that represents the weekly height of this tree in centimeters if the measurements begin when the tree is 600 centimeters tall. You must check the box below prior to submitting your exam! Check this box to indicate you are ready to submit your exam Instructors monitor ALL areas of a student's account Student e-mail accounts are to be used for FLVS course-related email only and not for general introductions or spamming of people in your address book. Please remember to click the Logoff link when you have completed your work in the course. FDK261.11