Answer:
D. sometimes less than zero and sometimes greater than zero.
Step-by-step explanation:
The income elasticity of demand is the responsiveness of the increase in the consumers income versus the quantity of goods and services demanded in an economy. we have five types of income elasticity of demand which are namely high elasticity, unitary elasticity, low elasticity and negative elasticity.
in high elasticity of demand when income rises then we see a much bigger increase in the quantity of goods and services demanded therefore positive coefficient.
The unitary elasticity of demand is when the income increases at the same rate the quantity of goods and services demanded rises therefore a coefficient is constant.
the low elasticity of demand is when income increases at a lower rate than the increase in the quantity demanded. positive but low coefficient.
The negative elasticity of demand is when an income increases and the quantity decreases therefore a negative coefficient is seen.
Hello!
A) <span>
The mass of the air freshener A decreases by 3.2 grams each day. Define a function, f, to represent this situation.In this function, the mass of the air freshener A (m)
is the dependent variable and the days (t) and the initial amount of the air freshener A (mi) are the
independent variables. If the mass decreases by a fixed amount each day, you only have to multiply this amount by the number of days:
</span>

<span>
B) The mass of the air freshener B decreases by 3.2% each day. Define a function, g, to represent this situation.
</span>
This function is trickier since there isn't a fixed amount of decreasing. Instead,
the rate of decreasing depends on the initial amount of the freshener (mi). You have to include this initial amount in the equation to correctly model it. This is how you do it:

Have a nice day!
Answer:
24/25
Step-by-step explanation:
Step 1: Define systems of equation
10x - 16y = 12
5x - 3y = 4
Step 2: Rewrite one of the equations
5x = 4 + 3y
x = 4/5 + 3y/5
Step 3: Solve for <em>y</em> using Substitution
- Substitute 2nd rewritten equation into 1: 10(4/5 + 3y/5) - 16y = 12
- Distribute the 10 to both terms: 40/5 + 30y/5 - 16y = 12
- Simplify the fractions down: 8 + 6y - 16y = 12
- Combine like terms (y): 8 - 10y = 12
- Subtract 8 on both sides: -10y = 4
- Divide both sides by -10: y = 4/-10
- Simply the fraction down: y = -2/5
Step 4: Substitute <em>y</em> back into an original equation to solve for <em>x</em>
- Substitute: 5x - 3(-2/5) = 4
- Multiply: 5x + 6/5 = 4
- Subtract 6/5 on both sides: 5x = 14/5
- Divide both sides by 5: x = 14/25
Step 5: Check to see if solution set (14/25, -2/5) is a solution.
- Substitute into an original equation: 10(14/25) - 16(-2/5) = 12
- Multiply each term: 28/5 + 32/5 = 12
- Add: 12 = 12
Here, we see that x = 14/25, y = -2/5 and solution (14/25, -2/5) indeed works.
Step 6: Find <em>x</em> <em>- y</em>
x = 14/25
y = -2/5
- Substitute: 14/25 - (-2/5)
- Simplify (change signs): 14/25 + 2/5
- Add: 24/25
Hope this helped! :)
Answer:
-1/2.
Step-by-step explanation:
slope of a line is (y2-y1)/(x2-x1). Plug in points (5-8)/(11-5). That gives -3/6. Reduce the fraction by 2, so -1/2 is the answer.