Mixing an acid and a base
Answer:
280
Explanation:
For ease of comparison $20/hr < $12/hr+ commission, let's do it by the hour first.
Hourly pay of the food truck is $12, every burger she sells, she gets 10% of the $12 burger, which is $1.2. Therefore all we need to figure out is 1.2x +$12 > $20. Minus both sides by 12, now all we have is down to the bare minimum: 1.2*X = $8
8 divided by 1.2 is 6.66 (infinite), but since she can't sell 0.6 of a burger, we need to round up, which is 7, keep in mind we are still at hourly. Now we know that she has to sell at least 7 burgers every hour she's working for the food truck, it's a 40-hour work week, 7*40 is 280.
Check:
Food truck: $12+ 12*0.1*7 = $20.4/hr $20.4 > $20
Best of luck for your SAT!
Answer: It will take 160 tablespoons of blue paint
Explanation: The ratio 12:5 indicates that there are 17 "parts" in the mixture. (Add 12+5 to get that.)
the Blue portion will be 5/17 of the total amount.
The total required is 34 cups, at 16 Tablespoons per cup, for a total of 544 tablespoons.
5/17 of 544 is 160
To check, The yellow would be 12/17 × 544 = 384
384 + 160 + 544, the correct amount required
G(k) = 67
f(5) = (5)^2 - 18 = 25 - 18 = 7.
g(k) = g(7)
g(7) = (7)^2 + 18 = 49 + 18 = 67.
hope this helps
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