Answer:
a
Step-by-step explanation:
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Y = 0.5x + <span>3.5
this id the equation for a line when </span>Slope = 0.5, y-intercept = 3.5
Add the like terms. So I'll add the variables. 8x+6x is 14x. Now add whole numbers. 30+10 is 40. Our new expression we'll be 14x+40=180. Subtract 40 from 180. 180-40=140. Now we have the expression 14x=140. 140 divided by 14 is 10. So x is 10.
Multiply the price of a flash drive by the number he buys:
$12 x 24 = $288 total
Hope this helps.
If not, go to: https://www.mathportal.org/calculators/financial-calculators/simple-interest-calculator.php