Creating Equations and Inequalities

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Creating Equations and Inequalities

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Creating Equations and Inequalities

Consecutive Number Problems Write a list of consecutive numbers Write a list of consecutive even numbers: If the numbers are consecutive use: 1st number = 2nd number = 3rd number = Etc If the numbers are consecutive ODD or EVEN: etc

Example 1 The sum of 3 consecutive even numbers add up to 1002. Find the three numbers. 1st 332 2nd 334 3rd 336

Example 2 The sum of 4 consecutive numbers add up to 4810. Find the four numbers. 1st 1201 2nd 1202 3rd 1203 4th 1204

Example 3 Jessica earned a 75 and 81 on her first two exams. What grade must she earn on the last exam to get an average of at least an 80 in the class?

Example 4 The length of a rectangle is 6 cm. more than the width. The perimeter is 32 cm. Find the dimensions. 11 cm. by 5 cm.

Example 5 Juan has no more than $50 to spend at the mall. He wants to buy a pair of jeans and some juice. If the sales tax is 4% and the juice with tax costs $2, what is the maximum price of jeans Juan can afford? x  $46.15

Example 6 Silvia is saving to buy a laptop that costs $1,100. So far she has saved $400. She makes $12 an hour babysitting. What’s the least number of hours she needs to work in order to reach her goal? x ≥ 58.33 hours

Graphing Review y = mx + b

Graph y= 2x+5

Graph y= -3x+ 4

Graph y = 𝟏 𝟐 x- 2