And ice cream stand uses the expression 2 + 0.5x where c is the number of scoops a customer buys. how much does an ice cream cone with 5 scoops cost?

4.5

You made a typo. The letter x in the expression should be c.

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.