Answer:
Step-by-step explanation:
It is an arithmetic sequence with common difference d = 30.
a₂₀ = a₁ + (20-1)d = -8 + 19·30 = 562
1) The order of selection matters. Therefore we need to find the number of permutations of 11 members taken 3 at a time. 11P3 = 990 ways.
Answer choice B) is correct.
2)The order of selection matters. Therefore we need to find the number of permutations of 12 members taken 4 at a time. 12P4 = 11,880.
Answer choice C) is correct.
Answer:
y = -2, 1, 4, 7 (in order)
Step-by-step explanation:
Plug in the value of x into the equation to find y.
For example for -1, plug in x as -1 into the equation.
y = 3(x) +1
y = 3(-1) + 1
y = -2
Similarly plug in the x to find the rest of the values for y.
