An electrician charges in initial fee of $50 and $190 after four hours of work. write a linear model that represents the total cost as a function of the number work

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

a

step-by-step explanation:

rurbrbrjrnrbjr