A music store marks up the instruments it sells by 30%. C. If the store paid $75 for a calorimeter and sold it tor $100, did the store mark up the price by 30%

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite