An electrician changes a flat fee plus an hourly rate for a service call. she changes a total of $94 for a 3-hour service call on monday and $130 for a 5-your service call on tuesday. how much should she change for 2-hour service call?

$56 (might be wrong but thatś what I got)

flat rate is $40  + $ 18 per hour

3 hour = $18 x 3 = $54  + flat rate $ 40 = $ 94

5 hour = $ 18 x 5  = $90  + flat rate $ 40 = $130

2 hour = $ 18 x 2 = $ 36 + flat rate $ 40 = $ 76

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)