10-d=-34-5d
what does d equal to

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Math question.. plz me .. best answer all