The expression 9x2 - 100 is equivalent to 1) (9x - 10)(x + 10)
2) (3x - 10)(3x + 10)
3) (3x - 100)(3x - 1)
4) (9x - 100)(x + 1)

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

1. what is the measure of ∠abc? what is the measure of ∠abd?

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