Solve by graphing. Label the axes and show where the solution is located on the graph.Suppose y = mx + b is a mathematical model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 0.7 and b = -4.5, find y when x is 15 min.
A. 18.15 min
B. 15 min
C. 11.85 min
D. 6 min
Answer: D
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Solve the problem.To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by 1.8 and then add 32 to the result. Express F as a linear function of c.
A. F(c) = 33.8c
B. F(c) = 1.8 + 32c
C. F(c) = 1.8c + 32
D. F(c) = 
Find the interval(s) where each function is increasing and the interval(s) where it is decreasing.
?
?
A. Increasing on 
, decreasing on 
B. Increasing on 
and 
, decreasing on 
C. Increasing on 
, decreasing on 
D. Increasing on 
and 
Completely factor the polynomial or state that the polynomial is prime.512 - x3
A. (8 - x)(64 + x2) B. (8 + x)(64 - x2) C. (8 + x)(64 - 8x + x2) D. (8 - x)(64 + 8x + x2)
Divide and simplify.- 
÷ - 
A. - 
B. 
C. 
D. - 