A hurricane changed the air temperature by -12 degrees. If the hurricane lasted 4 hours, how much did the temperature change per hour?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?