The phrase you typed can be written in mathematical form using a replacement of "a number" with the letter "x" (for our unknown).
So we can translate in mathematical form as shown below:
"<em>four more than the product of a number and 3 equals 7</em>"
x * 3 + 4 = 7
and of course we can solve this equation by operating with thenumbers so as to isolate the unknown "x"on one side of the equal sign:
Subtract 4 from both sides:
x * 3 = 7 - 4
x * 3 = 3
Divide both sides by 3 (so as to eliminate the factor 3 multiplying x):
x = 3 / 3
x = 1
And our answer is that the unknown number is 1 (one).
25 = 2x - 4
25 + 4 = 2x
29 = 2x
29/2 = x
14.5 = x <===
Between-group design compares two groups (randomly formed) on the same task, such as movement speed.
Given things that there are two groups that are randomly formed for the same task.
A between-group design in experimental design is an experiment in which two or more groups of individuals are assessed simultaneously by separate testing factors. This design is typically used instead of, or in conjunction with, the within-subject design, which applies identical modifications of circumstances to each participant in order to monitor the reactions.
Learn more about experimental designs at brainly.com/question/17280313
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The correct answer would be number 3 only because you are taking away when you have a negative number. SO u are taking away 3 gallons of gas.
Hope this helped!
in simplest form is 
