 # Section 2.4 solving equations with variables on both sides of the equal sign. Day 1.

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Section 2.4 solving equations with variables on both sides of the equal sign. Day 1

4 (x + 9) + 5 = -3 4x + 36 + 5 = -3 4x + 41 = -3 - 41 -41 4x = -44 x = -11 4x + 36 + 5 = -3 What is the solution of the following?

- 3x -3x 5x = 15 5 5 x = 3 8x = 3x + 15 What is the solution of the following?

11x + 16 = 2x + 7 -2x 9x + 16 = 7 - 16 - 16 9x = -9 9 9 x = -1 _______ ________ What is the solution of the following?

-36x -29x - 20 = 9 + 20 + 20 -29 x = 29 x = -1 7x – 20 = 36x + 9 What is the solution of the following?

It takes a graphic designer 1.5 h to make one page of a web site. Using new software, the designer could complete each page in 1.25 h, but it takes 8 h to learn the new software. How many web pages would the designer have to make in order to save time using the new software? Know Need Plan It takes a graphic designer 1.5 h to make one page of a web site. Using new software, the designer could complete each page in 1.25 h, but it takes 8 h to learn the new software. How many web pages would the designer have to make in order to save time using the new software? 1.5 h to make one page 1.25 hours per page with new software 8 hours to learn software Know Need Plan The number of pages the designer needs to make for the software to save time. Know Need Plan Write and solve an equation. Let p = the number of pages the designer needs to make. Design time with new software Time to learn software. Current design time. += 1.25 p81.5p += -1.25 p 8 =.25p.25 32 = p The designer must make 33 pages or more in order to save time using the new software.

Assignment: (section 2.4) Book page 105: 10-20, 44, 56

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