<u>Corrected Question</u>
In the year 2009, the cost of a flat screen television can be modeled by the equation C = -10t^2 + 500 where t is the number of years since 2009. Factor this cost polynomial.
Answer:

Using express exponents, you write C=10(50-t^2)
Step-by-step explanation:
To factor the cost polynomial,
, we follow these steps.
Step 1: Determine the greatest common divisor of the terms in the polynomial
The terms in the polynomial are 
The greatest common divisor of
is 10.
Step 2: Factor the polynomial by dividing each of the terms with the greatest common divisor obtained above.

Answer: 7 1/12
B.
Step-by-step explanation:
Rewriting our equation with parts separated
=1+1/4+5+5/6
Solving the whole number parts
1+5=6
Solving the fraction parts
1/4+5/6=?
Find the LCD of 1/4 and 5/6 and rewrite to solve with the equivalent fractions.
LCD = 12 3/12+10/12= 13/12
Simplifying the fraction part, 13/12,
13/12=1 1/12
Combining the whole and fraction parts
6+1+1/12 = 7 1/12
I think the correct answer would be A. 3x+y-3=0
because if you were to change it to slope intercept form, it would be y=-3x+3, which would be the equation for the line on the graph.
Answer:
5/16
Step-by-step explanation:
In 5/2 the time, we expect that 5/2 × 1/8 = 5/16 of the test will be complete.
_____
5/2 × (2/5 h) = 1 h