Lacy went to the fair. She paid $5 for the entrance fee. Each ride ticket cost $0.25. Lacy spent $12.50 at the fair. Which equation can be used to find how many ride tickets Lacey bought? $0.25r + $5 = $12.50
$0.25r + $5r = $12.50
5r + $0.25 = $12.50
$0.25r - $5 = $12.50

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.