30/15 i am not sure if we need to divide

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.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x