How to do substitution

A lifeguard earns $10.80 an hour for a 40 hour week and 1 1/2 times his base pay for every hour worked over the first 40 hours. If he works a 46 - hour week, how much is the lifeguards pay for the week?

The flip flop a lot company makes and sells flip flops they have one linear function that represents the cost of producing flip-flops and another linear function that models how much income they get from those flip-flops describe the key features

How do I solve x+4y=22 -x+5y=23

Find the percent decrease, and round to the nearest percent. from 64 photos to 21 photos

Which of the values for x and y make the equation 3x + 4y + 6 = 26 true? x = 4, y = 2 x = 5, y = 6 x = 4, y = 3 x = 3, y = 5

Find f (-2) for f (x) = 3x+4

Luigi is an urban and planner. As an independent contractor, he charges a $140 fee plus $25 per hour for each contract with the city.

To how many significant figures should each answer be rounded? a) (6.62610^-34 Js) (2.997910^8 m/s) / 4.07010^-7 m = 4.880610663391*10^-19 J (unrounded) b) (6.02210^23 atoms/mol) (0.589 g) / 20.18 g/mol = 1.75810^22 atoms (unrounded)

What does it mean when it says to estimate the sum or difference? In a math problem: 6/7+3/8 and 4/5+2 7/8.

60 minutes is 20% of what number