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Katy can text 32 words per minute on her phone. If she sends 8 texts
averaging 80 words each, how long would it take her to send all 8 texts?

it will take her 20 minutes to send all 8 texts.

Step-by-step explanation:

If she sends 8 texts averaging 80 words each, it means that the number of words in the 8 texts would be

8 × 80 = 640 words

Katy can text 32 words per minute on her phone. Therefore, the time it will take her to send 8 texts or 640 words would be

640/32 = 20 minutes.

25

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.