If an average-sized man with a parachute jumps from an airplane, he will fall 12.5(0.2t - 1) + 19t feet in t seconds. How long will it take him to fall 160 feet?

Step-by-step explanation:

I Dont Know

25% is the answer

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -