47are the expressions equivalent? select yes or no.
a. 2-4n and 2(1 - 2n)
b. 5(3x + 2) and 15x + 10
c. 2(rxr xr) and 6r
d. 8(22 – 3) and 162 -3

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?