Write an equation of the line with a slope of -2/7 and y intercept of 5

What is the approximate circumference of the circle shown below?

Find the quotient. 50a2 – 98b2 -5a +7b

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.