There were 64 runners to start a race. in the first half of the race, 1/4 of them dropped out. in the second half of the race, 3/8 of the remaining runners dropped out. how many runners finished the race?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Ihave trouble finding the nth term of a linear sequence

Could someone with number 1 and 2