Which statement is false? a) an expression can be evaluated. b) an expression can contain like terms. c) an expression sometimes contains an equal sign. d) an expression can contain numbers and variables. asap

Th perimeter of a rectangular garden is 150 feet. the length is 50 feet longer than the width, w. which equation could be used to calculate the width of the garden? a.) 2w+ 2(w-50) =150 b.) 2w+50 + 2w =150 c.) 2(w+50) + w =150 d.) 2w+ 2(w + 50) = 150 need asap. will give brainliest !

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression

If a + b = 28 and a - b = 10, then b =?