Answer:
29.787%
Step-by-step explanation:
The computation of the percentage that spend on yellow pages is shown below:
= Yellow pages ÷ Total advertising cost
= $700 ÷ ($700 + $600 + $650 + $400)
= $700 ÷ $2,350
= 29.787%
You add and subtract what's in the parentheses and they that will give u your awnser for x I hope I helped u
Answer:

Step-by-step explanation:
<em><u>The correct function is</u></em>

we have
System of equations
-----> equation A
-----> equation B
Solve by substitution method
substitute equation B in equation A

Solve for r
Divide by 7.188π both sides

square root both sides

INCREASE IN %: [(40280-1591)/1591]X 100% = 2,432&
For your info the increase between 2 amounts A₁ & A₂ =(A₁-A₂)/A₁