a frog sits at a number line at point -10. it is allowed to make up to 4 jumps. first, it can make a jump of 8 units in either direction, or it can skip this jump. then, it can make a jump 4 units long or skip this jump. then, it can make a jump two units long or skip this jump. and finally, it can make a jump one-unit long or skip this jump. where can it be at the end?