Write and solve an equation describing the maximum and minimum roasting temperatures ... Adding 3 to the absolute value of any of the numbers in this ...
1-4 Solving Absolute Value Equations Evaluate each expression if a = –3, b = –5, and c = 4.2. 18. ANSWER: 3 22. FOOD To make cocoa powder, cocoa beans are roasted. The ideal temperature for roasting is 300°F, plus or minus 25°. Write and solve an equation describing the maximum and minimum roasting temperatures for cocoa beans. ANSWER: maximum: 325°F; minimum: 275°F REASONING If a, x, and y are real numbers, determine whether each statement is sometimes, always, or never true. Explain your reasoning. 48. If then ANSWER: Always; if then x is between –3 or 3. Adding 3 to the absolute value of any of the numbers in this set will produce a positive number. Solve each equation. Check your solution. 58. ANSWER: 50 Solve each equation. 72. 3(w – 1) = 2w – 6 ANSWER: –3