If each person paints at the same rate, then the amount of work
the group accomplishes in any period of time is directly proportional
to the number of workers in the group.
If you decrease the number of workers, then the amount of work
they do in the same amount of time decreases by the same factor.
If 10 people do one whole job in 5 days, then 70% of that number
of people will do 70% of a whole job in 5 days.
1. C (x+8)^2
2. D y=6^x
3. D t/2.35 ; 2.13 ft.
4. A (7h^2-2h)/2; 672 cm^2
5. A 4.50 h ; $7.88
For one and two you just have to plug in the numbers into the equation to see what works.
Three four and five you have to read the problems and come up with an equation to get your answer. Please comment if you need to see the work!
Answer:
Step-by-step explanation:
Answer:
y ≈ 5.2
Step-by-step explanation:
∠ F = 180° - (42 + 48)° ← sum of angles in a triangle
∠ F = 180° - 90° = 90°
Thus Δ DEF is right at F
Using the sine ratio in the right triangle
sin48° = 
= 
= 
( multiply both sides by 7 )
7 × sin48° = y , then
y ≈ 5.2 ( to the nearest tenth )
