Astudent is attempting to evaluate the literal equation below. which statement best applies to the sample mathematical
work shown?
given: w + xy + 3x? = 2 and x = 2 y, find w when y = -2.
step 1: i first substitute y = -2 into x = 2 y, yielding x = 2(-2).
step 2: i simplify the expression, resulting in x = 4.
step 3: i substitute x = 4 and y = -2 into w + xy + 3x2 = 2 and get
w + 4-2) + 3(4)2 = 2
step 4: i use order of operations to simplify and get
so w = -38