Answer:
Cost to paint 4 walls of a room = $24.20
Cost of painting 3 walls of a room =$18.15
Step-by-step explanation:
(a) Abby purchased 4 2/5 gallons of paint to paint 4 walls of a room in her house.
![4\frac{2}{5}gallons \ of \ paint = \frac{4*5+2}{5} =\frac{22}{5}](https://tex.z-dn.net/?f=4%5Cfrac%7B2%7D%7B5%7Dgallons%20%5C%20of%20%5C%20paint%20%3D%20%5Cfrac%7B4%2A5%2B2%7D%7B5%7D%20%3D%5Cfrac%7B22%7D%7B5%7D)
1 gallon cost = 5.50
So 22/5 gallons cost = ![\frac{22}{5} * 5.5= 24.20](https://tex.z-dn.net/?f=%5Cfrac%7B22%7D%7B5%7D%20%2A%205.5%3D%2024.20)
Cost to paint 4 walls of a room = $24.20
(b)cost of painting 4 walls of a room = $24.20
cost of painting 1 wall of a room = ![\frac{24.20}{4} =6.05](https://tex.z-dn.net/?f=%5Cfrac%7B24.20%7D%7B4%7D%20%3D6.05)
Cost of painting 3 walls of a room = 6.05 * 3= $18.15
Answer:
22680
Step-by-step explanation:
31500/100= 315×28= 8820 (28%)
thus, 31500-8820= 22680
Answer:
y=(-3/2)x+24
Step-by-step explanation:
a perpendicular line should have the negative reciprocal of the line that it is perpendicular to.
negative reciprocal of 2/3 is -3/2
out line should look something like this
y=(-3/2)x+b
then we use the given point to find b
6=(-3/2)12+b
6=-18+b
b=24
Given:
$16 an hour - for regular hours
$21 an hour - for overtime. Overtime hours are any hours more than 35 hours for the week.
Part A: Create an equation that shows the amount of money earned, E, for working x hours in a week when there is no overtime. (3 points)
x hours in a week and there is no overtime and x <= 35 so equation:
E(x) = 16x
Part B: Create an equation that shows the amount of wages earned, T, for working y hours of overtime. Hint: Remember to include in the equation the amount earned from working 35 hours. (3 points)
Regular hours = E(x) = $16 x 35 = $560
T(y) = 21y + 560
Part C: Marco earned $602 in 1 week. How many hours (regular plus overtime) did he work? Show your work. (4 points)
21y + 560 = 602
21y = 42
y = 2
Marco worked 37 hours (35 regular plus 2 hours overtime)
Answer:
x=11
Step-by-step explanation:
Simplifying X= 7+4
therefore x=11