In right triangle abc, angle b is a right angle and sin of angle c=x cos angle a=

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20

(1/x + 1)^2 + 6 (1/x + 1) +5