Every school kid has been told that a circle of radius r has circumference=2\[pi] r. here is a parameterization of a circle of radius r: clear[x, y,t, r]; {x[t_],y[t_]}={r cos[t],r sin[t]}{r cos[t],r sin[t]}to get the whole circle, you run t from 0 to 2\[pi].use this information to confirm that the circumference of a circle of radius r measures out to 2\[pi] r units long.

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

dont think so

step-by-step explanation:

i'm sorry i don't know

step-by-step explanation: