The answer would be 5 = 30 ÷ 6 or ? = 30
I think it would be A. 9.6. I'm completely sure on that one.
What do you need to help?
The 15% tip would be 50*0.15=$7.5
Ok so we know that y=1 so we can simply sub in the value of y into the equation :
y = -5x +3
1 = -5x +3
Move the -5x to the LHS ( Left-hand-side ) therefore it changes sign as well move 1 to the RHS ( Right-hand-side ) it also changes sign.
5x = 3 - 1
5x = 2
x = 2/5
x = 0.4
Hope this helps :).
