How large are the cells combined? (Picture)

a negative exponent is translated as follows:

so, we have

you can't solve x because it is 2 linear equation and you only have one equation

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!