If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + 4y = −9 2x + 5y = −6 a. 2x + 5(4y − 9) = −6 b. 2x + 5(−4y − 9) = −6 c. 2(4y − 9) + 5y = −6 d. 2(−4y − 9) + 5y = −6

The table respent two linear functions the equation respented by the first tables is given

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?