1) tan 41°= 30cm divide by y cm
y= 30 divide by tan-1 41°
three squared minus two thirds

three square = 3 x 3 = 9

Least common factor of 1 and 3 is 3

Three squared minus two third is twenty five by three.
Let the total bill be x. We have:
<span>0.15x > 21 <-- Since 15% is 0.15 using inequality calc. x </span>>$140
Plug in 6 for x and solve out for f(x)