Answer:
16/21
Step-by-step explanation: 4 x 3 = 12, 3 x 7 = 21, 13/3 - 25/7 raise to the first common denominator, 91/21 - 75/21 = 16/21
Answer:
D) y = 4x - 13
Step-by-step explanation:
Slope: the change in y over the change in x
In a equation in slope-intercept form is in <em>y = mx + d, where m is the slope</em>.
The slope can be found by its definition. As<em> y goes up by 4, x goes up by 1</em>, so the slope is <em>4/1 = 4</em>.
The only option with 4 as the slope is D.
Remember that when you are making stimates, you are going to roiund to the nearest dollar. Since $3.29 is closer to 3 dollars than four dollars, Sam should use the 3 dollars figure to estimate if he can afford 4 gallons of gas.
$3+$3+$3+$3=$12
The actual value is

, so $3 per gallon is indeed a god estimate.
We can conclude that the correct answer is: <span>
$3 + $3 + $3 + $3 = 12, so Sal can afford the gas.</span>