In February, Mrs. Mitchem ordered 45 books and spent $1500. in April, she ordered 70 books and spent $2300

(A) Write an equation that represents the total cost (in dollars) of books ordered each month.

(B) Use the equation to predict the cost of ordering 20 books.

NEED HELP ASAP PLEASE!

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

Which of these side lengths could form a triangle a) 2 cm , 2 cm , 4 cm b) 3 cm , 5 cm , 10 cm c) 3 cm , 4 cm , 5 cm d) 4 cm , 8 cm , 15 cm

If jklm is a trapezoid, which statements must be true?