Mrs. Jacobsen wants to order toy instruments. whistles: 25 items is $21.25, 50 items $36.00, and 80 items $60.00. what is the difference between the highest unit price for whistles and the lowest unit price for whistles?

Fill in the other coordinate for the line 3x - 5y = 2: (4,)

Is the sum of 4.2 and 2 squared rational or irrational

Two sets of quadratic expressions are shown below in various forms: Line 1: x2 - x - 6 (x + 2) (x - 3) (x + 0.5) 2 - 6.25 Line 2: x2 - x - 2 (x + 1) (x - 2) (x - 0.5) 2 - 2.25 Which line contains three equivalent expressions?

The graphs of the equation 2x+5y=3 and 2x+5y=7 are parralel lines. Finds the equation of the line that is parallel to both lines and lies midway between them

Find the area of segment CFD given the following information: radius = 8in, area of ΔCBD = 25.9in2, and m∠CBD = 54° Round your answer to the nearest hundredths if necessary. 4.26 in2 20.10 in2 3.23 in2 17.90 in2

How does the volume of a sphere with radius 2cm compare to the volume of a sphere with radius 1cm

6 yards to 36 yards. Find the percent of change. Round to the nearest tenth of a percent if necessary.

Mark, evan, and cayla are playing a game. there are 3 blue marbles, 2 red, and 1 green marble. if mark pulls a blue marble he gets $1. if evan pulls a red marble, he gets a $2. if cayla pulls a green marble, she gets $3.

How do you reduce 12/30 by 1/2

Maria's age of 17 years less than Orlando's age. The sum of their ages is 33 find their ages.