Divide total cost by quantity.
$36 / 4 = $9 per basketball
Number 1 and number 3 are the same because if you are purchasing three tires that is 75% off the tires you need and one of them you get free. the free one becomes the overall discount of 25% off. number 3 is the same, the one quarter represents 25% off of the purchase.
Hello :
29° +90°+X° = 180°
x° = 180°-90°-29°
x° = 61°...(first answer)
12h-9h=3h move everything else to other side
3h=20-40+6
3h=-14
divide by 3
h=-14/3
