71⁄5 – 6 2⁄5 = ?

a. 13 3⁄5
b. 1 4⁄5
c. 4⁄5
d. 1 1⁄5

Answer pls man im trying to get out of summer school

Caleb and emily are standing 100 yards from each other. caleb looks up at a 45° angle to see a hot air balloon. emily looks up at a 60° angle to see the same hot air balloon. approximately how far is the hot air balloon off the ground? a)44.2 yd. b)63.4 yd. c)73.2 yd. d)89.7 yd.

David pays a 20% income tax on his $2,100 salary. how many dollars is the tax? show work