Find the Sum of the Arithmetic Sequence

Q17: Solve.<br>-The number of students in a school

Q18: Find the first term, the common difference,

Q19: Write out the sum. Do not

Q20: Express the sum using summation notation.<br>-

Q21: Find the sum of the arithmetic sequence.<br>-1

Q24: Determine whether the sequence is geometric.<br>-7, 4,

Q26: Express the sum using summation notation.<br>-

Q27: If the sequence is geometric, find

Q68: Determine whether the sequence is geometric.<br>-4, 12,

Q104: . Write the word or phrase that