Which paired data will show a positive association?

population and number of schools

hours worked and amount of money earned

Step-by-step explanation:

positive assocaition is just that if one is increasing the other has to also be increasing.

the above two are the ones that would be increasing together

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225