The temperature is changing every day by negative 7 over 18 degree Fahrenheit. What will be the change in the temperature after 3 days? A) 21 over 6 degrees Fahrenheit
B) negative 21 over 6 degrees Fahrenheit
C) negative 7 over 6 degree Fahrenheit
D) 7 over 6 degree Fahrenheit

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

How do you find principle and simple interest

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.