An electrician charges an initial fee of $50 and $35 for each additional hour of service. If the electrician received $140 for a job, how many hours of service did he perform?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?