Yuson must complete 45 hours of community service. she does 3 hours each day. which linear equation represents the hours yuson has left after x days?

y=45-3x

Step-by-step explanation:

we want y, which is the number of hours left. to find this, we take:

hours left=total # of hours required - hours worked/day

so:

y=45-3x

(because x could be any number: 2 days, 3 days, etc.)

Part a)

Part b)

Step-by-step explanation:

Let

x--------> the actual temperature

y-----> the thermometer reading temperature

we know that

------> linear equation that represent the situation

Part a) we have

substitute in the linear equation and solve for y

Part b) we have

substitute in the linear equation and solve for x