Sheila has been given 5 minutes to solve 20 problems. What is the minimum rate Sheila can work in order to finish in time?
A:1 problem per minute

B: 2 problems per minute

C: 4 problems per minute

D:5 problems per minute

C

Step-by-step explanation:

20/4=5

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: