4) An electrician charges $80 an hour for weekday repairs and $120 for nights and weekends. Last week, the electrician earned $4800 for 50 hours of work. Which system of equations can be used to find how many hours were worked on weekdays?

Find a counterexample for the statement. For every real number N > 0, there is some real number x such that Nx > x.

In seven minutes jack types 511 words how many words does he type per minute

A company that manufactures cars for freight trains manufactured 309 cars in the month of August, out of which 273 were boxcars. What fraction of the cars manufactured were not boxcars? simplify your answer. (pre-algebra)

Maricela heard that as a general rule, she should spend no more than one week's pay on rent. If Maricela's salary is $48,000 per year, what is the maximum amount per month that she should spend on rent?

If 54 went on one bus and two-thirds went on another bus how many was there in total

How do you write 120% as a decimal and as a fraction

Find the derivative of the function. y = √ (11x + √ (11x + (√11x)))

Carmen spent $88 at the mall the money she spent was 25% of the total amount she had in her wallet

Which of the following situations can be modeled with a periodic function? A) the height of a football after it has been thrown B) the height of a person riding on an escalator C) the height of a building after it has been constructed D) the height

Solve 1/3 x = - 4/5?