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lara31 [8.8K]
2 years ago
6

Mrs. Salas drives 115 miles per week to give 9 voice lessons. She deducts the cost of eight gallons of gasoline at $2 per gallon

from her profit. Mrs. Salas charges $35 for each voice lesson. What is her profit for one week?
Mathematics
1 answer:
ladessa [460]2 years ago
7 0

the answer is $299. If you write an equation, it would be x=35(9)-16. $35 each for 9 lessons. And 2*8= 16.

x=35(9)-16

x=315-16

x=299

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Suppose that the price​ p, in​ dollars, and the number of​ sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 p
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There is a decrease of 0.75 sales per day

Step-by-step explanation:

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- The price of item = p

- The number of sales = x

- The relationship between "p" and "x" is given below:

4p+4x+2px=56

Find the rate at which x is changing when x=2, p=6, and dp/dt=1.5 The rate at which x is changing is [ ] sales per day

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d/dt

4p+4x+2px=56

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Use the given values x=2, p=6, and dp/dt=1.5 to determine dx/dt

4*1.5 + 4*dx/dt + 2*(2*1.5+6*dx/dt)=0

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= -0.75

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3 years ago
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