Last year’s spell-a-thon spelling test for a first grade class had 15% more words with four or more letters than this year‘s spelling test. Next year, there will be 5% less than this year. What percent more words have four or more letters in last year‘s test then next years? i will give 25 points and brainliest

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Find the x-intercepts of the parabola withvertex (1,1) and y-intercept (0,-3).write your answer in this form: (x1,if necessary, round to the nearest hundredth.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling