Suppose y varies directly with x. if y =-4 when x = 8, what is the equation of direct variation?
complete the steps to write the equation of direct variation
1. start with the equation of direct variation y = kr.
2. substitute in the given values for x and y to get
3. solve for k to get
write the direct variation equation with the value found for k. the equation is

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.

Find the quotient with the restriction.

For g(x) = 5x - 3 and h(x) = [tex]\sqrt{x}[/tex], find (g · h)(4)