Answer:
4
Step-by-step explanation:
t is replaced by 4 and t = hours
5x = 2x-15
3x = -15
x = -5
substitute x = -5 into one of your equations
so y = 5x becomes y = 5 x -5
y= -25
x=-5 and y=-25
Can u take a picture of it
Not as hard as you think.
Just multiply all the prime factors together.
