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twiddleturd
02.11.2020 •
Mathematics
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The
profit on every sandwich is $2, and the profit on every wrap is $3. Sal made a profit
of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents
Sal's profits last month, where x is the number of sandwich lunch specials sold and
y is the number of wrap lunch specials sold.
describe how you would graph this line using the slope-intercept method. be sure to write using complete sentences.
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Ответ:
I would first convert 2x + 3y = 1,470 into slope intercept form y = mx + b which is y = -2/3x + 490.
From the equation of a line y = -2/3x + 490 I would plot the y-intercept (0, 490) on the graph. Afterwards, I would look at the slope -2/3 which is can be read as rise over run. From the y-intercept plot move down two spots as rise is -2 then over 3 spots for run to plot second point on graph. Finally, connect the dots to form a line.
Ответ:
-30%
Step-by-step explanation:
Do 7/10 to get the decimal of 7 to 10, then move the decimal forward two places to get the percent for 7/10, 70%. Next you'll need to figure out the difference between 100(%) and 70(%) with 100-70 which = 30, so the price decreased by 30%.