The product of 5 and a number is -80. find the number

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Solve: 3x+y=6 4x-2y=18 show all work !

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.