EFG and GFH are a linear pair, EFG=2n+17 and GFH=4n+19 what are EFG and GFH?
(PLEASE HELP)

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.