Solve the systems of equations below. 1) y = 3x+4 and y = 1/3x+2

y = 3·x + 4

y = 1/3·x + 2

3·x + 4 = 1/3·x + 2

3·x - 1/3·x = 2 - 4

8/3·x = -2

8·x = -6

x = -6/8 = -3/4 = -0.75

y = 3·(-0.75) + 4 = 1.75

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.