Answer:
x=10
Step-by-step explanation:
Lets use a ratio.
3:2 (12 to 8)
We need to scale the x+4 up 3/2 to be equal to 2x+1
(3/2) x+4 = 2x+1
1.5x+6=2x+1
-1.5x -1.5x
6=0.5x+1
-1 -1
0.5x=5
x=10
It is 32.0173263 because you add spaces to the decimal point and of course you don't put the zeros in
No becasue an acute angle added with another acute angle cannot add up to the needed 180
He needs to magnify the fire ant 5 times, and the crab spider 4, because 20 is a common multiple for both.