**Answer:**

**Step-by-step explanation:**

let whole sale cost=100

retail cost=100+40% of 100=100+40=140

to find the ratio

(retail cost)/(whole cost)=140/100=14/10=1.4

so retail cost=1.4*whole cost

or retail cost is 1.4 times the whole cost.

**Answer:**

**They partially dissocate in water ( first choice)**

-4x - 2.4

explanation: 1.3 - 3.7 = -2.4

then you leave the -4x by itself since it’s the only variable

**Answer:**

A

**Step-by-step explanation:**