Express the following sums using sigma notation. a. 9 plus 11 plus 13 plus 15 plus ... plus 99 b. 4 plus 10 plus 16 plus ... plus 52 c. 3 plus 8 plus 13 plus ... plus 63 d. StartFraction 1 Over 1 times 7 EndFraction plus StartFraction 1 Over 2 times 8 EndFraction plus StartFraction 1 Over 3 times 9 EndFraction plus ... plus StartFraction 1 Over 49 times 55 EndFraction

x+y = 29, 5x + 2y = 100

step-by-step explanation:

i'm guessing it was a multiple first option was the correct answer

i dont know sorry

step-by-step explanation:

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.