Which of the following are equations of perpendicular lines? a. y= -1/2x+3 , y=-2x+3 b. y= -1/2x+3 , y= 2x-3 c. y= -1/2x+3 , y= -1/2x - 1 d. y= - 1/2x+3 , y= - 2x+1

Which fraction below is equivalent to 10/12?

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items