Answer:
Step-by-step explanation:
9x - 4 + 5x + 16 = 180
14x + 12 = 180
14x = 168
x = 12
Remember you can do anything to an equation or inequality as long as ou do it to both sides
also, when multiplying by a negative number in an inequality, don't forget to flip the sign
5+5(x+4)<20
minus 5 from both sides
5(x+4)<15
divide both sides by 5
x+4<3
minus 4 from both sides
x<-1
Answer:
The Old World (b)
Step-by-step explanation:
This is exponential growth of the form
f=ir^t, f=final amount, i=initial amount, r=rate, t=time, in this case we know a=20 and r=2 so
f=20(2^t)
Answer:D
Step-by-step explanation:
