Find all natural number values of b that make the trinomial factorable.x2 + 9x + b
A. 8, 14, 18
B. 5, 6, 7, 8
C. 8, 14, 18, 20
D. 8, 14
Answer: C
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Solve.Peter went shopping for CDs with $100 in his wallet. He bought two CDs for $7.99 each, three for $11.99 each, and one for $14.99. Sales tax was included in the prices. After paying cash for the purchases, how much did he have left from the $100?
A. $66.94 B. $31.26 C. $36.26 D. $33.06
Determine if each of the following is true or false. If true, explain why.
(a) ?4 + ?9 + ?13 = 180°
(b) ?5 = ?8 + ?10
(c) ?4 = ?1 + ?14
(d) ?2 + ?3 + ?4 + ?11 + ?12 + ?15 = 360°
Solve the equation.4y = 3y - 5.2
A. -5.2 B. 4 C. -12.2 D. 5.2
Solve the problem.Ultraviolet radiation from the sun is thought to be one factor causing skin cancer. The amount of UV radiation a person receives is a function of the thickness of the earth's ozone layer which depends on the latitude of the area where the person lives. The following data represent the latitudes and melanoma rates for nine randomly selected areas in the United States. The melanoma rates refer to a three-year period. 
Graph the data on a scattergram treating latitude as the independent variable. Find an equation of the line containing the points 
/> and 
Express the relationship using the function name f. Graph the line on the scattergram. Interpret the slope of the line. Use the line to predict the melanoma rate of an area with a latitude of 32.5 degrees north. 
What will be an ideal response?