A rock is thrown in the air from the edge of a seaside cliff. Its height in feet is represented by f(x) = -16(x2 - 6x - 16), where x is the number of seconds
since the rock was thrown. The height of the rock is 0 feet when it hits the
water.
How long does it take the rock to hit the water?
A. 16 seconds
B. 8 seconds
C. 2 seconds
D. 6 seconds

Find an equation for the linear function which has slope -10 and x-intercept -7

Given: ad¯¯¯¯¯ is an altitude. prove: ab2+ac2=cb2 right triangle a b c with right angle a. point d lies on side b c and segment a d is drawn. angle a d c is a right angle. drag and drop a reason into each box to correctly complete the two-column proof. statement reason ad¯¯¯¯¯ is an altitude, and ∠bac is a right angle. given ∠adb and ∠adc are right angles. definition of altitude ∠bac≅∠bda ? ∠bac≅∠adc ? ∠b≅∠b ? ∠c≅∠c reflexive property of congruence △abc∼△dba ? △abc∼△dac aa similarity postulate abbd=cbab ? ab2=(cb)(bd) cross multiply and simplify. acdc=cbac polygon similarity postulate ac2=(cb)(dc) cross multiply and simplify. ab2+ac2=ab2+(cb)(dc) addition property of equality ab2+ac2=(cb)(bd)+(cb)(dc) substitution property of equality ab2+ac2=(cb)(bd+dc) ? bd+dc=cb segment addition postulate ab2+ac2=cb2 substitution property of equality

Find the amplitude of a sinusoidal function that models this temperature variation