Plz hurry Solve: Ix+21-1<4.

A. X<-3 and x>-7
B. X<-3 or x>7
C. x>3 or x<-7
D. x<3 and x>-7

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot