Translate this sentence into an inequality: Twice the difference of a number and 5 is at least -30.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Having a hard time understanding this question (see attachment).