3. A school board claims at least 60% of students bring a phone to school. A teacher believes this number is too high and randomly selects 25 students
to sample at a 98% confidence level.

step-by-step explanation:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation:

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