Find the x-intercepts of the parabola with vertex (-4,2) and y-intercept (0,-30).
Write your answer in this form: (X1,41), (x2,42).
If necessary, round to the nearest hundredth.

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°