Vance's Books sold 189 bookmarks this year. That is 5% more than the store sold last year. How many bookmarks did Vance's Books sell last year?
bookmarks

if x decreases by 4 then y increases by 10

step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i