Unit pricing which item has the lower unit price ? 1.) 1.99 for 5 dinner rolls or $2.99 for 8 dinner rolls. 2.) $10.49 for a 950g lasagna or $11.99 for a 1.1kg lasagna. 3.) 8 muffins for $4.29 or 12 for $6.99. all answers

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?