1. What does the term (w + 3) represent? Solution: The term (w + 3) represents the length of the rectangle. Students write an equation or inequality in one variable to model a contextual situation. Students define the variable and use appropriate units. Writing Linear Equations You are ordering tulip bulbs from a catalog. One bulb is $0.75. Shipping is $3.00. How many bulbs can be bought for $30. Solution: Let = the number of tulip bulbs x 3 + 0.75x = 30 = 36 x Writing Linear Inequalities The admission price to the fair is $10. Ride tickets cost $3 each. You only have $40 in cash to spend on admission and rides. Write an inequality and solve it to find how many ride tickets you can buy. Solution: Let = the number of ride tickets x 10 + 3x ≤ 40 ≤ 10 x Given a contextual situation, write equations in two variables that represent the relationship that exists between the quantities. Graph the equations. Writing linear equations The school bookstore rents graphing calculators for $5 per month. It also collects a fee of $10.00 for the school year. Write the rule for the total cost (c) of renting a calculator as a function of the number of months, m. Solution: = 10 + 5m c Writing exponential equations A population of 50 insects triples in size every month. Write a rule to model the population after months. x
1. What does the term (w + 3) represent? Solution: The term (w + 3) represents the length of the rectangle. Students write an equation or inequality in one variable to model a contextual situation. Students define the variable and use appropriate units. Writing Linear Equations You are ordering tulip bulbs from a catalog. One bulb is $0.75. Shipping is $3.00. How many bulbs can be bought for $30. Solution: Let x = the number of tulip bulbs 3 + 0.75x = 30 x = 36 Writing Linear Inequalities The admission price to the fair is $10. Ride tickets cost $3 each. You only have $40 in cash to spend on admission and rides. Write an inequality and solve it to find how many ride tickets you can buy. Solution: Let x = the number of ride tickets 10 + 3x ≤ 40 x ≤ 10 Given a contextual situation, write equations in two variables that represent the relationship that exists between the quantities. Graph the equations. Writing linear equations The school bookstore rents graphing calculators for $5 per month. It also collects a fee of $10.00 for the school year. Write the rule for the total cost (c) of renting a calculator as a function of the number of months, m. Solution: c = 10 + 5m Writing exponential equations A population of 50 insects triples in size every month. Write a rule to model the population after x months.
ADC%20review.docx