Aleprechaun places a magic penny under a girl's pillow. the next night there are 2 magic pennies under her pillow. each night the number of magic pennies doubles. how much money will the girl have after 20 nights?

61

Step-by-step explanation:

I'm guessing there's a penny aded to the amount from the previous nights amount every night?

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0