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Sandra was comparing the electricity of two different companies. One company is charging
$49 per month and $0.10 per kilowatt used. The other company wanted $39 per month, but
will charge $0.15 for all kilowatts after the first 100 kilowatts. Sandra used the following
system of equations to represent the situation.
Ca= 49 + 0.102
Quizzes
Assignments
Cb = 39 +0.15(2 – 100)

8y^50

step-by-step explanation:

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."