The exponent in-8y4 is:

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?