1.) the length of a rectangle is twice the width. the perimeter is 36 feet. find the
length and width
unknowns:
= width
= length
write an equation and solve: (remember that perimeter is 21 + 2w.)
width= length =

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth