Let’s use PEMDAS
P: there are no parenthesis
E: the exponents need to be solved
4^2-5x2^3
16-5x8
M: we need to multiply 5 and 8
16-40
now we just need to do the rest
16-40=-24
-24 is your answer
Y-3=2(x-(-1))
y-3=2x+2
y=2x+5
plug in the numbers to the point slope equation and solve
The anwser is 35/100 but you most likley will simplify
I hope this helps you
when x=20 y=30
x=40 y=60
y=40.3/2
y=x.3/2
y=3/2.x
