((will award brainliest fast! + many points, ! )

margot is looking at some information for the obstacle course she is interested in completing. the x-coordinate is the number of the obstacle, while the y-coordinate is the average time to complete the obstacle, measured in minutes.

(1, 6.25), (2, 6.875), (3, 7.5625), (4, 8.31875)

margot use an explicit formula to find the average time she will need for the 8th obstacle.

a] f(8) = 1.1(6.25)7; f(8) = 409782
b] f(8) = 6.25(1.1)7; f(8) = 12.179
c] f(8) = 1.1(6.25)8; f(8) = 2561137
d] f(8) = 6.25(1.1)8; f(8) = 13.397

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?