A local newspaper charges $9 for each of the first five lines of a classified ad and $4.75 for each additional line. Express the cost of an x-line ad, c(x) as a piecewise function.

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

answer:

a=9

step-by-step explanation: lmk if you need a explanation

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13