Rameen’s heating bill is $5.42 per month plus $1.08 per therm. how many therms can rameen use if he wants his heating bill to be a maximum of $87.50? write the solution in interval notation.

Write and solve an inequality:

Total(t) = $5.42 + ($1.08/therm)(t) ≤ $87.50.

First, subtract $5.42 from $87.50:  then ($1.08/therm)(t) ≤ $82.08

Next, divide both sides by $1.08 per therm:

t ≤ ($82.08) / ($1.08/therm) = 76 therms (maximum).  Thus, Rameen's usage could be [0,76] (therms).

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

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

you,

mrb

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844