12) the radius is 15 so with the equation (3.14)*r^2, we get (3.14)(15^2)=706.5
13) true, true (if x=4), true
14) y=0.75x+4.50, $8.25
100% = 1600
120% = 1920
1920/120 = 1536/y
1920y = <span>184320 (cross multiply)
y = 96%
decrease of 24% from 1920</span>
Answer:
Step-by-step explanation:
4-(

)+111
=4-(4)+111
=111 since 4 and -4 cancel each other out
Answer:
No
Step-by-step explanation:
2x+8 2(x+4)+4
2(x)+2(4)+4
2x+8+4
2x+12