Answer:
I needed help with a similar problem :(
Step-by-step explanation:
I don't know how to do this at all, I just started learning it yesterday.
Answer:
10
Step-by-step explanation:
f(-3)=-2(-3)+4=6+4=10
I did another one just like this about an hour ago. I did it the elegant, tedious way,
and it took about 2 feet of screen. Then I realized there was a totally bourgeois but
easy way to do it. For 5 points, I'll give you the method for the masses:
List all the possible pairs of digits that add up to 9, along with their flips:
18 . . . . . 81
27 . . . . . 72
36 . . . . . 63
45 . . . . . 54
Do you see any pair that are different by 27 ?
How about 36 and 63 ?
So the original number is 63, and when you flip it, it becomes 36, which is 27 less.
A) 7-2=5
b) 2(7)+3(2)=14+6=20
c) 2(7)(2)=28
d) (7-2)=5