The temperature at 10 a. m is 12 degrees fahrenheit. the temperature at 6: 00 a. m. was -7 degrees fahrenheit. how many degrees did the temperature rise?

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.