(a) You can plant 7 1/4 acres per pound of seed
(b) Isabel takes 7 minutes to run a mile
Answer:
1. x = 13
2. x=17
3. y= 34
Step-by-step explanation:
The equation is:
h ( t ) = - 16 t² + 60 t + 3
The toy rocket will reach the ground when: h ( t ) = 0
- 16 t² + 60 t + 3 = 0
![t _{12} = \frac{-60+/- \sqrt{3600+192} }{-32}](https://tex.z-dn.net/?f=t%20_%7B12%7D%20%3D%20%20%5Cfrac%7B-60%2B%2F-%20%5Csqrt%7B3600%2B192%7D%20%7D%7B-32%7D%20)
t 1 = - 0.05
t 2 = 3.8
Answer:
C ) 3.80 s