The solution set of |4x - 7| = 9 is
{4}
{-1/2, 4}
{}

{4}

Step-by-step explanation:

first move 7 to RHS in addition

then 4 in RHS in division

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.

yes

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step-by-step explanation: