Every night, mary spends 3 hours doing homework, 30 minutes practicing the piano, and 35 minutes talking on the phone. what is the total number of minutes mary spends doing these activities?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

If eh = hg and hg=16, find the diameter of k

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.