A study was done to investigate the relationship between employees years of service in the fast food food industry and hourly wages. The correlating linear model is shown below, where x represents the number of years of service after 2001, and y represents the hourly wage, in dollars. Interpret the slope y= 15.15 + 0.65x

A. An additional year of service is associated with an additional $15.15 per hour

B. An additional year of service is associated with an additional $0.65

C. And additional 0.65 a year of service is associated with an additional $1.00 per hour

D. And additional 15.15 years of service is associated with an additional $0.65 per hour.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

step-by-step explanation:

no solution.