Tina sells lampshades for 7$ each and paper lanterns for 4$ each at a one-day craft fair. She sells k lampshades and (k+4) paper lanterns. Select ALL the equivalent expressions for Tina's total sales at the fair.
A) 8k+16
B) 11k+4
C) 11k+16
D) 7k+4k+4
E) 7k+4k+16​

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.

Could someone me with this question i’ve been stuck on it for 20 minutes