[day] 1 3 9 13 14
[number of trees] 20 63 195 271 308

average rate of change between day 9 and day

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1