What is the value of z in the equation z=−4x2−3y2 if x=4 and y=−3? Select your answer from the drop-down menu.

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

68719476736

step-by-step explanation:

8*8*8*8*8*8*8*8*8*8*8*8=68719476736

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)