Are vertical angles obtuse all the time, sometimes, or never?

Sorry guys but as you have a small brain

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.

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2