6-81. Solve each equation below for Check your final answer. x. a. 4x = 6x 14 b. 3x + 5 = 50 – 6-82. Forty percent of the students at Pinecrest Middle School have a school sweatshirt. There are 560 students at the school. Draw a diagram to help you solve each problem below. a. How many students have a school sweatshirt? b. If 280 students have school t-shirts instead of sweatshirts, what percentage of the school has a t-shirt? c. What percentage of the school does not have a t-shirt or a sweatshirt? 6-83. Latisha wants to get at least a B+ in her history class. To do so, she needs to have an overall average of at least 86%. So far, she has taken three tests and has gotten scores of 90%, 82%, and 81%. a. Use the 5-D Process to help Latisha determine what percent score she needs on the fourth test to get the overall grade that she wants. The fourth test is the last test of the grading period. b. The teacher decided to make the last test worth twice as much a regular test. How does this change the score that Latisha needs on the last test to get an overall average of 86%? Support your answer with mathematical work. You may choose to use the 5-D Process again. 6-84. Factor each expression. That is, write an equivalent expression that is a product instead of a sum.
6-81. Solve each equation below for x. Check your final answer. a. 4x = 6x – 14 b. 3x + 5 = 50 6-82. Forty percent of the students at Pinecrest Middle School have a school sweatshirt. There are 560 students at the school. Draw a diagram to help you solve each problem below. a. How many students have a school sweatshirt? b. If 280 students have school t-shirts instead of sweatshirts, what percentage of the school has a t-shirt? c. What percentage of the school does not have a t-shirt or a sweatshirt? 6-83. Latisha wants to get at least a B+ in her history class. To do so, she needs to have an overall average of at least 86%. So far, she has taken three tests and has gotten scores of 90%, 82%, and 81%. a. Use the 5-D Process to help Latisha determine what percent score she needs on the fourth test to get the overall grade that she wants. The fourth test is the last test of the grading period. b. The teacher decided to make the last test worth twice as much a regular test. How does this change the score that Latisha needs on the last test to get an overall average of 86%? Support your answer with mathematical work. You may choose to use the 5-D Process again. 6-84. Factor each expression. That is, write an equivalent expression that is a product instead of a sum.
6.2.3_Homework_Questions.docx