Number 58 i need help with

y = -45x + 13

Step-by-step explanation:

The equation is *** y =  - 20x +13 ***

First: you have to look at  which would equal -25x

Second: you have take the -25x and put into the equation... y = -25x - 20x +13

Third: You have subtract -25x - 20x which equals -45x

Lastly: Now you have y = -45x + 13 and since 13 does NOT have a variable like -45x does, you then know that you have finished the equation

step-by-step explanation:

how many centimeters did the level of the salsa go down by?

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.