2/5 (-7) 5/2 as you know 2/5 x 5/2 = 1
so 1 x (-7) = -7
so the asnwer is -7
Let the model for the change in water vapor be
y = x^3 − 8x^2 + 15x
to find the x intercepts we can factor this expression
x^3 − 8x^2 + 15x = x(x−3)(x−5)
the x intercepts are 0, 3, 5
Hope this helps!
The rule is 3^x.
Check: 3^1 = 3; 3^2 = 9; 3^3 = 27 and 3^4 = 81
33/16 I’m sorry if it’s wrong