Which function has a range of (-pi/2,pi/2)? y = Cos-1x
y = Tan-1x
y = Sec-1x
y = Csc-1x

Plz me plz i will give a brain just plz

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27