Y is directly proportional to
x². If y=108 when x=3 find y when x=7

here is a example

Step-by-step explanation:

If y is directly proportional to x and y=5 when x=2, what is the value of y when x=16?

✓ $$y=40$$ Explanation: $$ypropx$$ $$y=kx$$ when $$x=2$$, $$y=5$$ $$5=k(2)$$ $$:.k=5/2$$ When $$x=16$$, $$y=(5/2)(16)$$ $$y=40$$

idk

step-by-step explanation:

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or