1. Graph is attached.
Title: Contractor 1's fee
In the real world it would mean that the total cost (y) is starting at 200 and then 50 per hour.
(1,250) means that she paid 250 for 1 hour
(2,300) means that she paid 300 for 2 hours
(3,350) means that she paid 350 for 3 hours
2. It means that contractor 2 charges 5 more per hour
it means that contractor 1 charges 50 more as a starting fee.
3. rate of change 60, this means that it changes by 60 every time.
y-2=60(x-0)
y intercept is 0
4.
a. x=210, y=10700,y=210(50)+200
b.x=195, y=195(55)+150, y=10875
c.x=185,y=185(60),y=11100
d. She should choose contractor 2 because it's the second cheapest and contractor 1 is over 200 hours.
Answer: About 43% of the paintings are displayed on the first floor.
Step-by-step explanation: For this problem we can use a percent equation to solve for p, the percent of paintings that will be displayed on the first floor.
Lets write the percent equation:
40/92 = p/100 (We basically are finding 40 out of 92 paintings is what percent of the total paintings.
40/92 x 100 = p/100 x 100 (We always multiply both sides by 100 when dealing with percent that are out of a whole, or 100.)
40 x 100 = 4000/92 = ABOUT 43. p/100 x 100 = p.
About 43 = p
So about 43% of the paintings are displayed on the first floor.
X^2=19x+1
x^2-19x-1=0
-(-19)+(19^2-4(1)(-1))^(1/2))/(2*1)
(19+(361+4)^(1/2))/(2)
=(19+(365^(1/2))/2
=(19-(365^(1/2))/2
(3*4)*4 - 4 rectangles 3 by 4, and (4*4)*2 - 2 squares 4 by 4
altogether
(3*4)*4+(4*4)*2=12*4+16*2=48+32=80