4. Given the following information, write the exponential equation. a. a = 0.5
b = 12
b. a = -4
b = 6
C. a = 3/2
b = 7/8
d. a = 2.3
b = 5.53

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

d is ur answer hopes this i dont really know how to explain it to u.