Multiply.(3x + 1.5)(3x - 1.5)
A. 9x2 - 22.5
B. 9x2 - 2.25
C. 9x2 - 9x- 2.25
D. 9x2 - 3
Answer: B
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Solve the problem.Mrs. Hernandez prepared her grocery list at home. Her list contained the following items with their sale prices: cheese - 
soda - 
; hamburger - 
; and gum - 
. She bought all of the items at the store except the crackers. How
much money did she spend? A. $23.86 B. $22.86 C. $21.89 D. $22.89
Iodine-131 is an isotope that is used to study the functioning of the thyroid gland. This isotope has a half-life (time required for half the material to erode) of approximately 6 days. If a patient is given an injection that contains 13 micrograms of iodine-131, what will be the iodine level in the patient after 8 days? Use the function 
, where A is the amount of the isotope, in micrograms, in the patient after t days. Round to the nearest tenth.
a. 3.9 micrograms b. 5.2 micrograms c. 6.0 micrograms d. 6.8 micrograms e. 7.6 micrograms
Use the vectors u, v, and w in the accompanying figure to graph the vector. 
z - v
A. 
B. 
C. 
D. 
Answer the question.If two numbers are divided, then the answer is called the ? .
A. sum B. product C. quotient D. difference