Guys is there a way to get over this.. so like when i see the number 9 or something that ends in 9 it just gives me ocd and i hate it so much this used to be for any number that doesnt end in 5 or 0 but now its just 9
plus try and actually help me dont just comment a 9 or something

2-digit numbers less than 91 which are 1 less than a multiple of 10

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

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