Which strategy is the most appropriate strategy to solve x2−8x=242 ?

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points

Which of the following vectors are orthogonal to (2,1)? check all that apply