What's (-3x + 7) + (-6x + 9) and if you can, ow do i show work for that

Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.