Question

Help please....

Answer 1

8. Which model is most appropriate for the data set?

(–1, 20), (0, 10), (1, 5), (2, 20) (1 point)
linear
quadratic
exponential
none of the above
For questions 10–11, find the solutions of the system.
9. y = x² + 3x – 4
y = 2x + 2 (1 point)
(–3, 6) and (2, –4)
(–3, –4) and (2, 6)
(–3, –4) and (–2, –2)
no solution
10. y = x² – 2x – 2
y = 4x + 5 (1 point)
(–1, 1) and (–7, –23)
(–1, 1) and (7, 33)
(–1, 33) and (7, 1)
no solution
11. If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? (1 point)
1.5 s
3 s
6 s
9 s
12. A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 28t + 7. How long does it take the ball to reach its maximum height? What is the ball’s maximum height? Round to the nearest hundredth, if necessary. (1 point)
1.75 s; 7 ft
0.88 s; 43.75 ft
0.88 s; 17.5 ft
0.88 s; 19.25 ft
13. A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder (h) in feet after t seconds is given by the function h = –16t² + 148t + 30. How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary. (1 point)
9.25 s; 30 ft
4.63 s; 640.5 ft
4.63 s; 1,056.75 ft
4.63 s; 372.25 ft

Answer 2

it looks like alot but its only 6 questions out of 50.

Answer 3

for 9 and 10 plug in the value of x and u will get y value which will lead u to your answers

Answer 4

for 11 the object will hit the ground at h(t) = 0 = -16t^2 +144, so solve for t

Answer 5

did u solve those 3 and get answers?

Answer 6

nope..