Answer:
1. y = 7x. This is an example of direct variation as the value of y also increases if the value of x is increased.
2. xy = 24. This is an example of inverse because the value of y is decreased when x is increased.
3. F = 4/R. This is inverse variation for the same reason as number 2.
4. m/n = 4. Direct variation. For the same reason as number 1.
5. i = 2pr. Joint variation. The value of i is dependent on the values of two other variables.
6. R = cl/r². Joint variation.
7. A = pir². Direct variation. I believe pi here is for π, leaving only A being dependent only to value of r.
8. V= pir²h. Joint variation.
Step-by-step explanation:
The 3 is in the ones place because it is on one right of the decimal point.
Answer:
volume = 27 cubic feet
Step-by-step explanation:
3 feet in 1 yard
3*3 =9
9*3=27
Answer:
b = c(a - 6x )
Step-by-step explanation:
Given
6x + 
= a ( subtract 6x from both sides )
= a - 6x ( multiply both sides by c to clear the fraction )
b = c(a - 6x)
Answer:$12.15
Step-by-step explanation:
Given
The regular price of an item 
Maria gets a discount of 
Amount paid after the discount is
