Dean is building a tower with blocks as shown in the diagram. the tower shown has three stories
and uses 15 blocks. how many blocks are required for a tower of 80 stories?
a) 400
b) 6399
c) 6496
d) 6560
e) 6723

A

Step-by-step explanation:

divide 80 by 3 and then multiply answer by 15

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)