With 5 and 6

5)
which one of the equations has a graph with no x-intercepts?
a) y = 4x
b) y = -x2
c) y = x2 - 1
d) y = -x2 - 1
6)
devon decided to rewrite the quadratic equation so that it could be simplified into a square in order to find the zeros.

which process correctly shows devon rewriting x2 + 10x + 13 into a square?
a) (x2 + 10x + 25) + 13
(x + 5)2 +13
b) (x2 + 10x + 25) + 13 - 25
(x + 5)2 -12
c) (x2 + 10x + 100) + 13 - 100
(x + 10)2 -87
d) x =
10 ±
102 - 4(1)(13)
2

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.