Which graph represents a reflection of f(x) = 2(0.4)x across the y-axis?

How far is x from 5 on a number line?

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry