Answer:
a. when x=1 so substitute 1 to any X in the given equation.
y=-3(1)+2.5
y=-3+2.5
y=-0.5
b.when x is -1.5 so substitute -1.5 to any x in the equation
y=-3(-1.5)+2.5
y=-4.5+2.5
y=-2
Answer:
5,-1,-7
Step-by-step explanation:
I think the answer is x = -4.
The sale is 33% off notebooks. This can be found by first subtracting .8 from 1.2
1.2-.8=.4 Now divide .4 by 1.2 to get your answer.

=.33
.33=33%
You can also solve this mentally because if you know your basic multiplication tables, 3*4=12 and so

of 12 would equal 8.
Does you understand it now?