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PGCPS BENCHMARK 3 GRADE 6 MATHEMATICS / GRADE 6 MATHEMATICS / 4 OF 24
Annie buys some greeting cards. Each card costs $1.75 She pays with a twenty dollar bill Let n represent the
number of greeting cards Annie buys. Write an expression that represents the amount of change Annie should
recieve
Enter your expression in the space provided

send it over

step-by-step explanation:

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation:

(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.