Consider the following four statements taking 300 mg/day of drug abc will result in no changes in depression. taking 300 mg/day of drug abc will result in either no changes in depression or an increase in depression. taking 300 mg/day of drug abc will result in either increase or a decrease in depression. taking 300 mg/day of drug abc will result in a decrease in depression. which two statements could be the null and alternative hypothesis in a one-tailed testing procedure?

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.