Babji

You are constructing a box for your cat to sleep in. The box has no top (just a bottom and four sides). The plush material for the square bottom of the box costs $8.00 per square foot and the material for the sides costs $3.00 per square foot. You need a...

At what point(s) does 4x^2+y^2−8x+4y+4=0 have horizontal and/or vertical tangent line(s)? A. (1,0),(1,−4),(0,−2),(2,−2) B. (1,−2),(2,−1) C. (1,0),(0,−2) D. (1,−2)

The velocity for a particle traveling along the x-axis, measured in feet/second, is represented by v(t)=−2((t−3)^2)(t+1)(t−6). At what time(s) does the particle change direction? Group of answer choices A. t=1,6 B. t=3,6 C. t=1,3,6 D. t=6

Thanks for the quick response. so would the answer be option A?