Answer:
<h2>u = 0</h2>
Step-by-step explanation:
A18
18 is the exponent, am not sure because I see this topic a really long time ago, but I think that you multiply the exponent because the sign is multiplication
the standard form is g(x)=x^2+2x-1
She needs to earn at least 84 to buy the mp3 player
earnings=earningsperhour times numberofhoursworked
earnings per hour=12 dollars
number of hoursworked=h
therefor
earnings=12 ties h or12h
earnings is at least 84
earnings is greater than or equal to 84
earnings<u>></u>84
12h<u>></u>84
solve
12h<u>></u>84
divide both sides by 12
h<u>></u>7
she needs to work at least 7 hours
to graph, draw a line at x=0 and shade to the right, make the line solid
