Answer
Find out the how many people adopted a manatee this year .
To prove
As given
last year 40 people adopted a mantee through Fia's foundation.
This year 15% more people adopted a manatee
15 % is written inthe decimal form

=0.15
15% of the last year 40 people adopted a mantee = 0.15 × 40
= 6
Total number of people adopted a manatee this year = 6 + 40
= 46
Therefore the people adopted a manatee this year be 46 .
Hence proved
Answer:
put x=1/2, you will get, r(1/2)=20*1/2-89
=10-89= -70.
hope it will help.
44.85 * 9.84 = 441.2256
88.6 * 5.01 = 443.886
A) Y1-Y2/X1-X2
9-4/8-(-2) = 5/10= 1/2
b) 1/2x+b=y <-- plug in a point
1/2(-2)+b=4 <--plugged in (-2,4)
-1+b=4 <-- simplify/solve
b=5
c) 1/2x+5=y